Shopify
The storefront to open when you want customers Amazon cannot take away, from $29/mo
From $29/mo

The second-largest US marketplace, no monthly fee, referral fees mostly 15%, and far less competition per listing
Free plan available · paid plans from 15% per sale
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Verdict: the most obvious second marketplace for an established Amazon seller, because the fee schedule mirrors Amazon’s and the competition does not.
Walmart Marketplace is the third-party seller program on Walmart.com. Approval is invitation-style (you apply and Walmart decides), the catalog is a fraction of Amazon’s, and the buyer base skews toward everyday household categories. Walmart Fulfillment Services (WFS) is the FBA equivalent, and listing and inventory sync tools like Sellbrite treat it as just another channel.
No new-seller fee discount is published on the pricing page at the moment; Walmart runs those as time-limited promotions.
Brand-registered Amazon sellers with proven products in household categories, existing UPCs, and the operational capacity to serve a second channel. If your Amazon listing is already converting, the same listing with less competition is the whole pitch.
New sellers without an Amazon track record, which Walmart’s approval process tends to reject, and anyone in categories Walmart’s buyers do not shop for. Also skip it if adding a channel means splitting inventory you cannot afford to split; stockouts on Walmart are punished with search rank just like on Amazon.
Walmart is one of our channels, and it is the marketplace we recommend first to sellers who ask where to expand after Amazon. If you plan to fill Walmart orders from FBA stock, read our Multi-Channel Fulfillment guide first: Walmart allows it only in unbranded packaging with Amazon Logistics blocked.
Approval can take weeks and can fail without a reason. Walmart’s price-parity rules can delist an item if it is cheaper elsewhere, including on your own Amazon listing. Traffic per listing is a fraction of Amazon’s, so expect volume to be a tenth of your Amazon sales, not a half.
Apply once your Amazon listings are stable, use WFS, and sync inventory from day one. No affiliate link; the vendor link is below.
The storefront to open when you want customers Amazon cannot take away, from $29/mo
From $29/mo
The channel everything else on this site serves: Professional plan $39.99/mo, referral fees from 8%, most categories 15%
From $39.99/mo
The marketplace where creator content sells the product directly, with no monthly fee and a referral fee per sale
Free plan · paid from 6% per sale