market.winedepot.com is definitely a Shopify store - you can view the HTML source - if there were any doubts there. Shopify does support custom development and integration but an odd platform to choose if you are relying on that custom development, unless they're using existing 3rd party plugins for the ebay and Amazon integration. Shopify orders are incremental. (I'm a dev who works on a few Shopfiy sites).
DW8 Price at posting:
10.0¢ Sentiment: Hold Disclosure: Held