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Selling on Amazon and Your Own Store at the Same Time (2026 Guide)

What has to stay in step when you sell on Amazon and on your own site: one stock count, prices Amazon's pricing policy accepts, the same product facts, and returns, from Amazon's own rules.

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Enes Özkan, Founder and CEO9 min read

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In this article
  1. Why do so many Amazon sellers run a second store?
  2. How do you stop selling the same item twice?
  3. Can your own store be cheaper than Amazon?
  4. Do your listings have to match?
  5. Whose returns policy applies?
  6. Can you invite Amazon buyers to your own store?
  7. Can software or an AI agent run both channels for you?
  8. A checklist for selling on both
  9. Where FaStart fits
  10. FAQ
  11. Sources

You can, and most Amazon sellers already do: Amazon says more than 95% of the independent sellers in its store sell across multiple channels. Listing the same products twice is the easy part. The work is keeping four things in step: one stock count, prices that hold up under Amazon's pricing policy, the same product facts, and two returns policies that don't trip each other up.

Note: Amazon's rules here come from its own US pages, read on 20 October 2026 and listed at the end. Amazon updates them, so check the page before you lean on a number.

Why do so many Amazon sellers run a second store?

Because selling in one place is now the exception. Amazon gave the 95% figure in September 2026, when it announced multichannel tools for Seller Central, and it described the problem those sellers share: the same product "can live as separate listings on Amazon, a seller's own website, Shopify, eBay, Walmart, and TikTok, each governed by its own dashboard, rules, and blind spots."

Its answer is to bring the other channels into Seller Central. Sellers can connect eBay, Shopify, TikTok and Walmart accounts, and the tools are rolling out gradually to US sellers at no added cost (Amazon). You don't have to use them, and you can run both channels from your own store's admin instead. Either way, the same four things need watching.

How do you stop selling the same item twice?

Overselling shows up in a number Amazon watches. If a buyer orders on Amazon and you cancel because the last one already went out from your own site, that's a seller cancellation. Amazon measures these as a cancellation rate over seven days on the orders you ship yourself, and it puts the reason plainly: "A high CR indicates inconsistent inventory management." You have to keep the rate under 2.5%. Above that, Amazon may suspend your seller-fulfilled selling or deactivate the offers with high cancellations (Amazon).

Here's how it happens, in a made-up case. Hartwell Soap, a soap maker in Burlington, Vermont (an example, not a real shop), has four bars of lavender soap left. Its stock count reaches Amazon once an hour. At 8:05 pm two bars sell on its own site. At 8:20 pm three sell on Amazon, which still shows four. One Amazon order gets cancelled, and it counts.

Two set-ups keep one stock count:

  • Your store holds the count. Your own inventory, or a tool connected to it, is the source, and every sale on either channel takes from it at once. Amazon's listing reads the same number. The weak point is the gap between a sale and the update, so hold back a unit or two on your fastest sellers.
  • Amazon holds the stock. With Multi-Channel Fulfillment you send inventory to Amazon, and Amazon ships the orders from your own site and other channels out of the same pool, in unbranded packaging by default. It quotes 3 business days for standard delivery and 2 for expedited (Amazon MCF). Those orders carry MCF's own fees.

Can your own store be cheaper than Amazon?

It can, but Amazon will see it. Amazon says it "regularly monitors the prices of items on our stores, including shipping costs, and compares them with other prices available to our customers." One of the practices its Fair Pricing Policy names is "setting a price on a product or service that is significantly higher than recent prices offered on or off Amazon." It can then remove the Featured Offer, remove the offer, suspend the ship option, or in serious or repeated cases suspend or terminate selling privileges (Amazon). The policy doesn't say how large a gap counts as significant.

So a sale on your own site can make your normal Amazon price look too high, because "recent prices" off Amazon include it. An "excessive" shipping fee is on the same list.

It's simpler to price from Amazon's fee. Amazon's referral fee is 15% in many categories, Home and Kitchen among them, taken from the total price including shipping, with a $0.30 minimum per item (Amazon). Work out the price that still leaves you a margin after that fee, and you can charge it on both channels. Our comparison of marketplace seller fees puts Amazon's beside Walmart's, eBay's, Etsy's and TikTok Shop's.

Do your listings have to match?

Keep the facts identical and let the wording fit each channel. Amazon requires a GTIN, the number the barcode carries, to create new listings in most categories (Amazon). Google uses the same number to match products and tells sellers not to guess one or make one up (Google). One product, one GTIN, everywhere. Your SKUs can differ by channel as long as each points back to the same product.

What works is one master record per product, with the title, measurements, materials, photos, GTIN, price and stock, and each channel's listing written from it. Amazon's own announcement describes the alternative: a new listing for every channel, content rewritten for each channel's format, and every version published one by one. Our guide to product pages that answer the buyer's questions covers what that master record should hold.

Whose returns policy applies?

Each channel's own. On Amazon orders, Amazon's policy applies, and "most items can be returned for a refund or replacement/exchange within 30 days of delivery" (Amazon). When you ship an Amazon order yourself, the return comes back to you, and you must offer a US return address, a prepaid return label, or a full refund without asking for the item back. US sellers are enrolled in Amazon's prepaid returns program by default, which issues the labels for eligible returns (Amazon seller guide).

On your own site, the policy you post is the promise. The US has no federal cooling-off right for online orders: the FTC's rule doesn't cover sales "made entirely online, by mail, or telephone" (FTC). Buyers abroad can have rights of their own, which our guide to shipping and returns a small shop can keep goes through.

Log every return in one place, whichever channel it came from, so an item you can resell goes back into the single stock count as soon as it's checked. And consider giving your own store the same 30 days. A shopper who buys from you in both places won't have to remember which rule is which.

Can you invite Amazon buyers to your own store?

No. Amazon's code of conduct says you "may not attempt to circumvent the Amazon sales process or divert Amazon customers to another website," which rules out links or messages pointing them elsewhere. Addresses and phone numbers you receive for an order may be used only to fulfill it and must be deleted afterwards. Messages go through Buyer-Seller Messaging, only when the order or customer service needs them, and "Marketing communications are prohibited" (Amazon).

So your own store's customers have to come from your own marketing, such as search, social and the people who sign up on your site.

Can software or an AI agent run both channels for you?

It can help, inside Amazon's rules for agents. Section 19 of Amazon's Business Solutions Agreement covers "Use of Agents," and it defines an agent as "any software or service that takes autonomous or semi-autonomous action on behalf of, or at the instruction of, any person or entity." Every agent you deploy or authorize must "clearly identify themselves as automated systems" and follow Amazon's Agent Policy, and Amazon may limit agent access at its discretion. The same agreement makes you "solely responsible for all activities" that use your API credentials, whoever carries them out (Amazon), so pick tools whose actions you can see and whose access you can revoke. Our guide to what an AI agent can run in your store today covers which jobs should still wait for you.

A checklist for selling on both

What has to stay in stepWhat Amazon's rules sayWhat to set up
StockSeller cancellations under 2.5% over seven days, on orders you shipOne stock count both channels read, or one pool through MCF
PricesNo price "significantly higher" than recent prices on or off AmazonA price that works after Amazon's fee, on both channels
Product factsA GTIN for new listings in most categoriesOne master record per product, written out for each channel
ReturnsMost items returnable within 30 days of deliveryOne returns log, so resellable items go back into the count
CustomersNo diverting Amazon buyers; their details only for the orderYour own store's audience, built through your own marketing
Agents and toolsAgents identify themselves; you answer for what runs on your credentialsTools you can audit, with access you can switch off

Where FaStart fits

Keeping a store's catalog, prices, stock and orders in step with its marketplaces from one place is part of what FaStart is building. The product page shows where each part of FaStart stands today, and ways to sell covers the marketplaces.

FAQ

Does Amazon allow selling the same products on my own website? Yes. Amazon built its multichannel tools for sellers who do. What its rules limit is sending Amazon buyers to your site, and an Amazon price well above your recent prices elsewhere.

Can I use FBA stock for orders from my own site? Yes, through Multi-Channel Fulfillment. Amazon ships orders from your other channels out of the same inventory, in unbranded packaging by default, and charges MCF's own fees.

What happens if I oversell? You cancel the order. On orders you ship yourself, that cancellation counts toward a rate Amazon requires you to keep under 2.5% over seven days.

Sources

All read on 20 October 2026.

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