What I don't understand is, why will you get it bought by someone else and again ship it to you when you can buy it yourself directly. Even if you don't have a card, there are many exchanges which provide you with virtual cards and are okay for online purchases.
Unfortunately most cards I've tried have low limits and I have exhausted all of them.
As for the other problem, I have no intention to scam anyone - also, PayPal and card are both entirely reversible payment methods. Also, with escrow, you can't really go wrong.