DOES NOT sync inventory between Ebay, Amazon and Shopify. Or it doesn't seamlessly. I wanted to see my inventory on one page, but Marketplace Listings were in the Integration Channels --> Listings page, but Shopify was in the Inventory --> Product page. Exchanged emails with Support before getting a workaround solution, which wouldn't have streamlined anything. The interface was pretty and semi-intuitive , which is a shame.