Quartile vs Epinium: the Quartile alternative with a published price and your P&L.
Quartile is a managed service: patented AI and a dedicated strategist run your ads on Amazon, Walmart, TikTok Shop, Google, ChatGPT and more, under an annual contract. Epinium is a European platform you run yourself: Amazon ads, listings, stock and a P&L down to the contribution margin of each product, at a published price.
Free to start · No credit card · Set up in minutes
QuartileEpinium
ChannelsAmazon + 8 more, incl. TikTok Shop23 Amazon marketplaces + your store
Bid changesHourly, via Marketing StreamDaily or hourly, with Stream data
Public priceNot published; private Order FormPublished, Brain plan free
Commitment60-day paid evaluation, then annualMonthly or annual
Profit per productMargin bidding with COGS; no P&LP&L to contribution margin
DataStored in the USEU (AWS Ireland), GDPR
Sources: quartile.com, its terms (28 Sep 2026) and privacy policy, read 7 Nov 2026
Short answer
Epinium vs Quartile: the short answer
Quartile is a managed retail media service from New York: patented AI bids hourly on Amazon Sponsored Ads while a dedicated strategist runs the account, and the same model covers Amazon DSP, Walmart, Instacart, Criteo, TikTok Shop, Google, Meta, Microsoft and ChatGPT ads; it also sells listing SEO and promotion management. It publishes no price (third parties estimate about $895/month for one Amazon marketplace up to $10,000 of spend), and its terms start with a 60-day paid evaluation followed by an annual contract that renews automatically, with 60 days' written notice and the rest of the year due if you leave early. Epinium is a European platform you run yourself: published plans from a free one, AI that manages Sponsored Products, Brands and Display inside your own campaigns with changes waiting for your approval or applied by an autonomy mode, plus listings, stock and a P&L per product, with data hosted in the EU. Choose Quartile for channel breadth and hands-off management; choose Epinium for a published price, control over each change and profit per product.
Last updated:
Choose Quartile if…
You need one partner across Amazon, Walmart, Instacart, Criteo, TikTok Shop, Google, Meta, Microsoft and ChatGPT ads at once. Epinium covers Amazon only, plus your own Shopify or WooCommerce store.
You want a strategist to run the account for you and are comfortable committing to an annual contract. If you would rather run it in-house, it also has a Self-Service plan.
Amazon DSP and AMC audiences matter most to you, run by the same AI and strategist as your Sponsored Ads. Epinium does not run DSP or AMC.
You prefer a fee set by spend tier to a percentage of spend: its terms bill a tier, while Epinium adds 3% of the spend its AI manages on Business and Master.
Choose Epinium if…
You want to see the price before a demo and try it for free: published plans from the free Brain plan, a 7-day trial with no card, and monthly or annual billing you can cancel any time before renewal.
You want AI to work inside the campaigns you already have: changes wait as tasks for your approval or an autonomy mode applies them, new campaigns start paused, and every change is logged for 12 months.
You want a P&L down to contribution margin, listings and stock in the same platform as your ads, data hosted in the EU under GDPR, and an MCP and API your AI agents can use.
Advertising + listings (every Amazon field, checked against Amazon’s rules) + catalogue + stock + Profitability (P&L) in one platform, with your Shopify or WooCommerce store next to Amazon
Ads across retailers, plus listing SEO and promotion management as services; no stock or P&L module documented
Human approval (HITL) & audit trailWhether AI acts on your account before a person signs off
Yes — you choose: changes wait for your approval, or an autonomy mode applies them; new campaigns start paused; every change logged for 12 months and reversible
A strategist runs the account; per-change approval queue or change log not documented publicly
GEO — listings optimised for Rufus & AI assistantsThe discovery surface advertising tools ignore
Yes — AI listing generation and audit against Amazon’s rules, written for shoppers and for AI assistants like Rufus
Listing SEO sold as a service; Rufus or AI-assistant optimisation not stated
P&L and margin per productTACOS, fees, product cost and contribution margin, not just ACOS
Yes: P&L and margin per product with fees, advertising by type and product cost (contribution margin on Business), plus Margin leaks: the products whose margin fell, ordered by the money at risk (Business)
Bids to a target margin using your COGS per ASIN; no P&L view documented
Amazon EU depthES, IT, DE, FR, UK as first-class markets, not translations
Built in Spain for ES, IT, DE, FR and UK; interface in five EU languages; 23 Amazon ad marketplaces
London office; 2026 Amazon Ads localisation award for launches in Spain, France and Italy
EU data & GDPRWhere your commercial data lives and how AI use is governed
Hosted in the EU (AWS Ireland) under GDPR, with a data processing agreement; no training on your data without consent
Data transferred to and stored in the US; ISO/IEC 27001 certified
Open to your AI agents (MCP)Can Claude/ChatGPT query the platform on your behalf
Yes — Epinium MCP in Claude and in the ChatGPT app directory, plus a public REST API; reads on every plan, including your P&L with product cost; writes SP/SB/SD campaigns, workflows, portfolios, tasks, Amazon listings from a spreadsheet (pending until you publish) and Shopify or WooCommerce products on Business (opt-in scopes); 12-month change log
AI Data Assistant chat inside its portal (Pro Suite); no MCP or public API documented
Free trialCan you evaluate it before a sales call
Yes — 7-day trial of the paid plans on your best-selling products, no card, then the free Brain plan for as long as you want
No free trial; 60-day paid evaluation, ended only by a portal button, 30 days after the click
Competitor data verified on from the public sources below. Capabilities a vendor does not document publicly are marked as such rather than denied. Spotted something out of date? Tell us and we will correct it.
We have not used Quartile ourselves, so nothing below is our opinion: every point names the third party that reported it and links to it. Scores come from each product's own G2 page, read on the date shown — with the review count, because a high score on a handful of reviews is not the claim a slightly lower one on hundreds is.
Quartile
4.6/5
220 reviews on G2
81.7% of reviews from small business
What reviewers say works
Reviewers on G2 most often single out their dedicated account strategist, frequently by name. G2: Quartile reviews ↗
Epinium plans with a published price, one of them free
0
prices published by Quartile
60
days of paid evaluation before Quartile's annual contract
EU
Epinium data hosted in the EU (AWS Ireland) under GDPR
Why brands choose Epinium over Quartile
What Epinium doesthat Quartile does not document.
Quartile's strengths are channel breadth, Amazon DSP and a strategist who runs the account for you. Epinium's are different: a price you can read before any demo, AI that works inside your campaigns at the control level you choose, a P&L per product, listings and stock in the same platform, and your data in the EU.
Your Control Level, Per Change
Changes can wait as tasks for your approval, or an autonomy mode you switch on (Maintenance, Growth, Expansion, Custom) applies them. New campaigns start paused, and every change is logged for 12 months and can be undone. Quartile is run by a strategist and does not publicly document a per-change approval queue.
A P&L, Not Only a Margin Target
Quartile bids toward a target margin using the COGS you give it, and that is a real strength. What it does not document is a P&L. Epinium's Profitability module takes revenue, fees, advertising by type and product cost down to the contribution margin of each product.
Your Campaigns Stay Yours
Epinium's AI works inside the campaign structure you already have and harvests search terms into your own ad groups. Quartile One rebuilds into one campaign per ASIN, keyword and match type, unless you use its Versa rules. Leave Epinium and your campaigns stay in your Amazon account as they are.
Listings for Shoppers and AI Assistants
Epinium generates and audits every Amazon listing field with AI against Amazon's rules, written for shoppers and for AI assistants like Rufus (GEO). Quartile sells listing SEO as a service run by its team and does not state Rufus-specific work.
Built for Amazon EU
A Spanish team, an interface in five European languages and keyword suggestions per marketplace, across 23 Amazon ad marketplaces including the US. Quartile has a London office and won Amazon's 2026 localisation award for launches in Spain, France and Italy; its portal runs in English, Japanese and Chinese.
European Data, GDPR-Native
Your data is hosted in the EU (AWS Ireland) under GDPR, with a data processing agreement. Quartile's privacy policy says client information is transferred to and stored in the United States, and its terms let it use client data for its business purposes.
How it works in practice
From a managed service toa platform you run, with the control you choose.
Quartile's AI and strategist manage bids, placements and budgets for you, hour by hour. Epinium manages Sponsored Products, Brands and Display inside your own campaigns, with bids moved daily or by the hour, and the same platform holds your listings, stock and P&L.
Raise the bid on this keyword?
AI proposal → Your approval
Current bid €0.62
AI-suggested bid €0.78
Pending your review
Govern
You choose which AI changes wait for your approval
Review it, or let it runAI drafts the change, a bid, a budget shift or a listing edit, and you decide how it lands: it waits as a task for your approval, or an autonomy mode you switch on (Maintenance, Growth, Expansion, Custom) applies it. New campaigns and workflows always start paused.
A 12-month change logEvery applied change is logged for 12 months with who made it and the old and new value, so any change can be undone. Nothing is lost when the AI moves a bid.
Inside your structureEpinium works inside the campaigns you already have instead of rebuilding them. If you leave, they stay in your Amazon account exactly as they are.
Create an exact-match campaign for my 5 best-margin ASINs on .de
brand-cmo→amazon-campaign-builder
Picked 5 ASINs by contribution margin
Campaign created, starting paused
Waiting for you to switch it on
Reads on every plan · writes on Business, with your scopes
Ask
Your Amazon, from Claude or ChatGPT
An MCP that writes, not only readsQuartile's AI Data Assistant answers performance questions inside its own portal; it documents no MCP or public API. Epinium's MCP and REST API read on every plan and, on Business, create and edit Sponsored Products, Brands and Display campaigns, workflows, portfolios and tasks, with the scopes you grant.
Epinium is in ChatGPTFind it in the ChatGPT app directory, or connect it to Claude: ask in plain language and get answers from your own Amazon data.
Your Shopify or WooCommerce store, in the same chatConnect your own store next to Amazon to see what sells where, spot catalogue gaps and keep prices and stock aligned across channels.
Every Amazon field, checked against its rulesEpinium generates and audits titles, bullets, descriptions and every other Amazon product field with AI, checked against Amazon's rules before you publish.
Written for AI assistants too (GEO)Listings are written for shoppers and for AI assistants like Rufus. Epinium writes for that surface; it does not measure your visibility inside Rufus.
Keyword suggestions per marketplaceAmazon's keyword recommendations for each marketplace and AI keyword ideas sit next to your listings. Quartile offers listing SEO as a done-for-you service instead.
Profitability: your P&L to contribution marginRevenue, fees, advertising by type and product cost, down to the contribution margin of each product (product cost and margin from Business). Quartile uses your COGS to set margin targets for its bidding but documents no P&L view.
TACOS next to the P<ACOS and margin per product sit side by side, so you judge ad spend by what each product leaves after fees and product cost.
Stock in the same placeA stock forecast per product lives in the same platform as your ads and listings. Quartile documents no stock module.
With a vast catalog and little time, we trusted Epinium to optimize our listings. This led to increased organic sales and improved advertising performance through AI, allowing us to focus on growing our business.
Alberto Feria
CEO, Alfa Holding
★★★★★
With Epinium, we are able to save a lot of time editing our clients' listings thanks to its bulk editor and Artificial Intelligence. We are able to take care of their strategies.
Miriam Larrosa
CEO, Roicos
★★★★★
Our expectations were certainly exceeded. Everything is just so well thought out, and snappy. Their support team is excellent too!
Neus Dominguez
Marketplace Manager, Labbox
★★★★★
We use Epinium every day to monitor the status of all our ASINs across all marketplaces and improve our SEO very productively. An indispensable tool that lets us manage a much larger catalog than we imagined. Worth every penny.
Oriol Penya
Organic Beauty Brands
★★★★★
It is impossible to calculate the hours Epinium has saved me managing customer catalogs. I've modified catalogs of up to 3,500 SKUs and run SEO audits comfortably from the same panel.
Jordi Ordóñez
Amazon Consultant
★★★★★
Epinium's ability to analyze and adjust ads in real-time based on performance has enabled us to maximize ROI and achieve our business goals more effectively. Without a doubt, I recommend Epinium to any seller.
Edgar Alvarez
Head eCommerce, BANDAI Entertainment Europe
Try the Quartile alternative that shows your profit, under your control.
Yes. Epinium is in the ChatGPT app directory and connects to Claude through its MCP, and it has a public REST API. It reads on every plan, the free Brain plan included, and on Business it creates and edits campaigns, workflows, portfolios and tasks with the scopes you grant. Quartile offers an AI Data Assistant chat inside its portal; it does not document an MCP or a public API.
How is Epinium different from Quartile?
Quartile is a managed service: patented AI and a dedicated strategist run your ads on Amazon (Sponsored Ads and DSP) and on Walmart, Instacart, Criteo, TikTok Shop, Google, Meta, Microsoft and ChatGPT, bidding hourly. Epinium is a platform you run: it manages Amazon Sponsored Products, Brands and Display inside your own campaigns, and the same platform holds listings, catalogue, stock and a P&L per product, at a published price.
What contract does Quartile ask for?
Its terms (updated 28 September 2026) start with a 60-day paid evaluation that you can only end with a button in its portal, effective 30 days after the click. Otherwise you move to an annual contract that renews automatically: not renewing needs written notice 60 days before the end, and email does not count. Leaving early means paying the rest of the year, while Quartile can end the contract at any time. Until March 2026 its terms were month to month. Epinium is monthly or annual, and you cancel any time before renewal, effective at the end of the period.
Does Quartile charge a percentage of ad spend?
No. Its fee is a monthly amount set in a private Order Form by ad-spend tier, number of channels and service level, and it moves up automatically when your spend reaches a new tier (Amazon DSP fees may include a spend-based part). It publishes no amounts; third-party sites estimate about $895/month for one Amazon marketplace up to $10,000 of spend, a figure Quartile has not confirmed. Epinium publishes its plans and adds 3% only on the ad spend its AI manages, on Business and Master.
Does Epinium put a human in the loop?
You choose. Changes can wait as tasks for your approval, or an autonomy mode (Maintenance, Growth, Expansion, Custom) applies them once you switch it on. Either way, new campaigns and workflows start paused, and every change is logged for 12 months and can be undone.
Is Epinium built for Amazon EU?
Yes. It is made in Spain for ES, IT, DE, FR and UK, with an interface in five European languages, keyword suggestions per marketplace and data hosted in the EU (AWS Ireland) under GDPR. It also covers the US and the rest of Amazon's 23 advertising marketplaces. Quartile stores client data in the US and runs its portal in English, Japanese and Chinese.
How much does Quartile cost compared with Epinium?
Quartile: Not published; third parties estimate from about $895/month (one marketplace, up to $10K spend). Epinium publishes its pricing: Guru from €159/mo, Business €349 and Master €799 — published, not quoted on request. Business and Master also carry an advertising commission of 3% for new customers, charged only on the ad spend Epinium manages. You can start free with no credit card. Full detail on Epinium pricing. Competitor data verified on 7 November 2026 from public sources.
Is there a European alternative to Quartile?
Yes: Epinium. Quartile — Quartile, LLC, New York; founded 2018; bought Sidecar in 2021; also offices in Philadelphia, Miami and London. Epinium is a Spanish company, independent since 2015, with data hosted in the EU (AWS Ireland) under GDPR and a data processing agreement, built for Amazon EU (Spain, Italy, Germany, France and the UK) with the interface in five European languages and keyword suggestions per marketplace.
Does Quartile optimise listings for Rufus and AI shopping assistants?
Listing SEO sold as a service; Rufus or AI-assistant optimisation not stated. Epinium generates and audits your listings with AI against Amazon’s rules, written for the shopper and for AI assistants like Rufus (GEO); see GEO / AI search. To be precise: Epinium writes for that surface, but it does not measure or score your visibility inside Rufus.
We use cookies
We use cookies for analytics and marketing. You can accept all, reject them, or customize your choice. Privacy policy
FBASHOW OFFER · UNTIL 20 NOVEMBER
Up to 40% off Epinium Business
For new customers. Pick the code that matches how you pay for Business and enter it at checkout.
If you pay monthly−25%your first 3 months
If you pay yearly−40%your first year
How to use it
Create your account and choose the Business plan.
Choose monthly or yearly billing.
At checkout, enter the matching code: FBASHOW25 for monthly, FBASHOW40 for yearly.
Only for accounts that have never had a paid subscription. Valid until 20 November 2026. And the commission on the advertising Epinium manages is 3% for new customers.
Amazon
Shopify