Looks like a great idea but with all the scamming that goes on within the crypto world (and especially in THIS FORUM which is a scammers heaven) I would be very skittish sending any coin YET. Once the site is proven and maybe gets some "real" publicity I'd use it because I buy a lot from AMZ. At least it looks & feels legit (no obvious spelling errors!) which is more than I can say for some other sites that get posted on here.
Good luck, I hope it becomes very successful for you because it's a great idea (isn't there another site that does that which has been around for a while?).