It would probably work, nothing new. but there a few problems:
1. You are scamming. Somebody is losing money. its not nice at all, what if you would be the seller?
2. if the seller won't respond, it would take like 2 months for it to get refunds, so it is a very slow method.
Guys, please don't do it. You are 100% stealing. Sure nothing will happen to you, but it's not a good way to make money at all. You are an asshole for doing it.