Multi-channel inventory sync across marketplaces: one stock pool, no oversells
The best inventory software for a reseller on Amazon, Walmart and eBay does three things. It holds one stock count behind every listing, keeps FBA and WFS stock apart from your own, and shows profit from what each marketplace actually paid. Rilk does all three. Sell a unit anywhere and every other listing drops within seconds. Sync is on Pro: start free, then turn on a 14-day Pro trial with no credit card.
Inventory sync is on Pro. Start free, then turn on a 14-day Pro trial. No credit card.
The spreadsheet problem
Most sellers run multi-channel inventory out of a spreadsheet nobody trusts — ten units listed on four channels, and every overlap turns into a cancellation, a refund, and a defect-rate hit. The usual fixes are worse than the problem: rationing stock per channel and losing sell-through speed, or hiring a VA to reconcile every two hours and still getting burned on weekends.
What Rilk does
Stock pools are unified. List the same SKU on every channel you want, and Rilk holds the count in one place. When a unit sells anywhere, every other listing drops in lockstep within seconds.
How it changes your day
Instead of checking five tabs every morning for cancellations, desuppressions and Buy Box changes, the dashboard shows the consolidated overnight picture across every channel, sorted by what needs attention. A sale on one channel decrements the pool the same second — the second buyer on another channel never sees an "available" listing for a unit that is already gone.
What's included
Frequently asked questions
What's the best inventory software for selling on Amazon, Walmart and eBay?
Pick one that keeps one stock pool behind every listing, tracks FBA and WFS stock separately, and matches each settlement back to its orders. Rilk does all three for Amazon, Walmart and eBay. The full checklist is in our guide, How to choose multi-channel inventory software, linked below.
How do I stop overselling when the same item is on Amazon, Walmart and eBay?
Stop keeping a separate count per channel. Rilk holds one stock pool and every listing draws from it. When a unit sells anywhere, every other listing drops in step, so the second buyer never sees an "available" listing for a unit that is gone.
Is the inventory sync across marketplaces real time?
A sale on one channel updates the others within seconds, and a cancellation or refund puts the unit back in the pool the same way. There is no schedule to babysit and no manual re-sync.
Which marketplaces does the multi-channel inventory sync cover?
50+ sales channels in total, split by plan. Free connects Amazon, Walmart, eBay, Shopify and WooCommerce. Pro adds Back Market and Newegg, plus Temu in beta, by invitation. Ultimate adds the full retailer/EDI layer: every retailer on the Mirakl platform, every retailer on SPS Commerce, and EDI/vendor connections to Home Depot, Lowe's, Macy's, Overstock, Zoro, Walmart DSV and Wayfair. Two Pro connections sit outside the sync: Bonanza links today but nothing syncs through it yet, and PayWhirl brings subscription orders in without anything going back out.
How do I connect a retailer that isn't on the list?
Ask us. If you're already connected to the Mirakl platform, adding another Mirakl retailer is on request, usually in days, at no extra cost. If this would be your first retailer or EDI connection, standing it up is part of Ultimate onboarding.
See Multi-channel inventory sync across marketplaces in your account
Free tier, no credit card required.