One stock level and one price for each product, kept in MarketplaceHub and sent to every Amazon marketplace you sell on. A sale anywhere lowers the quantity on Amazon too.
Price and quantity travel to Amazon as their own small update, apart from the full listing. Stock and prices change all day, while titles and images rarely do, so only what changed is sent.
When an item sells on eBay, Etsy or Shopify, the new quantity goes to your Amazon listings without sending the whole listing again.
Every channel sells from the same number, which is what stops the last unit selling twice on two marketplaces.
Listings are kept per Amazon marketplace, so a price can be different in the UK and in Germany while the stock stays shared.
Amazon accepts an update first and checks it later. We wait for Amazon's result and attach it to the product it belongs to.
An update Amazon refuses raises a notification with Amazon's own reason.
Where the numbers come from and where they go.
No questions in this category.
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