There is no Paypal protection on digital items, so if you send the code, and the buyer claims he never got it, you will be required to refund his payment.
If you don't refund willingly, PP will refund the buyer and go after you for the money. Plus you get a black mark on your selling record.
On the other hand, if you send the physical card, you would need to have a Delivery Confirmation number in order to win a Not Received claim.
So, how often are you likely to get ripped off?
You can add a small amount to the asking price on every card you sell, as a self-insurance premium against unwarranted claims.
But if you have just one card, you may find selling on kjj or cl a safer bet.
