The overall rating reflects the current state of the app. It accounts for all app reviews but prioritizes the most recent ones.
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.