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How Marketplace Stacking works.
One membership. Stores on several marketplaces, all run by our team, and more added as we open new ones.
Three parts. One membership.
Marketplace Stacking is how we spread one partner's stores across several online marketplaces instead of one store on one platform.
- 1Stores on several marketplaces
Your stores sit on eBay and Poshmark today, each with its own buyers and best-selling products.
- 2One team runs all of them
Our U.S. team handles listings, orders, customers and returns for every store you own.
- 3New marketplaces stack on
When we open a new one (Mercari is next), your stores go up on it. No new membership fee.
- TodayeBeBayLive136 million active buyers
- TodayPPoshmarkLive130M+ users. Fewer than 1 in 100 sellers is a pro
- NextMMercariNext · by 2027Your stores go up when it launches
- Then+Every one afterIncludedNo new membership fee, ever
Nearly half of what Americans buy online now happens on a marketplace, and marketplaces drove almost three-quarters of U.S. ecommerce growth in 2025.Source: eMarketer, US Marketplace Ecommerce 2025. eBay buyers: eBay Q2 2026 results. Poshmark users: poshmark.com.
Five steps. One is yours.
We build your stores
Our team sets up your eBay and Poshmark stores in your name. You verify your ID and accounts.
About 30 daysListings go up every day
Our in-house AI finds products that sell and writes the listings, with 100+ new listings a day per store.
100+ a dayOrders ship
eBay orders ship straight from the supplier. Poshmark orders are checked and packed in our 30,000 sq ft Massachusetts warehouse.
U.S. teamCustomers get looked after
Our support team answers messages, tracks shipments and handles returns for every store.
Every storeYou get paid
The marketplace pays you directly. Each month you get one statement across your stores, and you keep 70% of the profit.
70% yoursWhat do I own, and what does your team do?
- Every store and seller account, in your name
- Every sale. The marketplace pays you directly
- 70% of the monthly net profit across all your stores
- The right to leave on 30 days' notice and keep your stores
- Store setup, product research and daily listings
- Supplier orders, warehouse handling and tracking
- Customer messages, returns and account health
- Your monthly profit statement, across every store
Why sell on marketplaces instead of my own website?
A new website has no shoppers, so you pay for ads every month to bring them in. eBay and Poshmark already have millions of buyers searching every day. There's no ad budget: the marketplace's fee only comes out when an item sells.
How does the money move?
The marketplace pays you directly into your own account. Each month, our team sends one statement across your stores. Your 70% of the net profit is yours; our 30% comes out of net profit only. If a month doesn't make a profit, you owe us no split for it.
Illustrative example, not a projection. Every store's results are different.
What does my week look like?
About 30 minutes. You review your monthly statement, pay off the product card and keep your records. That's the owner's job. Everything inside the stores is ours: listings, orders, suppliers, the warehouse, returns and customer messages.
What do I pay for products?
Products are paid for with a credit card you keep on file, with $5K–$10K available. On eBay, most items are bought from the supplier after they sell. The card is needed because marketplaces can hold payouts for up to 30 days on new stores.
Questions about how it works
How does Ecom Accelerator work?
Our team builds stores in your name on eBay and Poshmark, lists hundreds of everyday products, ships the orders and handles the customers. The marketplace pays you directly. Each month you get one statement across your stores and keep 70% of the net profit. We call this Marketplace Stacking.
How much of my time does it take?
About 30 minutes a week. You review your monthly statement, pay off the product card and keep your records. Our team does everything inside the stores.
If you're so good at this, why not run the stores yourselves?
We do. Our team has run its own ecommerce stores since 2018, and started Ecom Accelerator in 2024. The problem is a ceiling: marketplaces only let one person own about one or two stores, in their own name. Our team has the people, the software and the suppliers to run hundreds of stores. What we don't have is hundreds of names. You own the stores, we run them, and we split the profit.
What if a store has a bad month?
That's the point of stacking. Your stores sit on different marketplaces with different products and different buyers, so one slow month doesn't have to be your whole month. If a month has no profit, you owe us no split for it.
How long until my stores go live?
About 30 days after you onboard and verify your ID and accounts. Your first sale starts the 16-Month Profit Protection clock.
Am I taking on debt or buying inventory up front?
No. There are no loans, no inventory financing and no stock sitting in your garage. You keep a card on file with $5K–$10K available, and we only charge it for an item after a customer has already paid for it in your store. The customer's money lands in your bank account, and you pay the card off each month. The card is needed because marketplaces can hold payouts for up to 30 days on new stores.
Get in now. Every marketplace we open next comes with it.
Apply now. If you're a fit, we'll invite you to a private call.
Apply nowNo pressure on the call. If it isn't a fit, we'll tell you.