so it acts like a prepaid cold storage wallet?
Essentially you can always move the free bitcoin that came on the wallet to a private key of your own.

Or you can continue to use this wallet and private key for future deposits and long term storage.
I think people would be better off doing it themselves, no?
There has to be a large element of trust between you and buyers for this to work.
I actually have quite a bit of substantial trust on this forum between escrow, group buys, crowd funding and 100% transparancy on who I am and what I do. Everyone who has commented on this does not quite understand exactly the entire point of the free bitcoins, paypal, shipped paper wallets I guess...