I thought it's already well-known that dealing with anything even just remotely related to PayPal is extremely dangerous.
What do you mean by "BLACK"?
I'm guessing: stolen or illegally acquired.
Right, but he said all that are on the market. I'm just trying to discern which ones are bad and how he knows. I was thinking about accepting these as payment for BTC. I bought one yesterday for my own knowledge and kept the receipt. I can see if someone purchased them with a credit card, then they could charge back. That's why you need to provide proof via the receipt that you paid cash. Also, note on the receipt is says "card number" and the last 4 digits match the actual card. I don't know how someone could scam provided you have all this info. Of course I want to know if it is possible before I accept this as payment.
Even this can be got by Scamming people in USA by convincing them to buy a product. and as the scammer is not from US, the only way to pay him is by buying PPMC or MoneyPak or Vanilla or Reloadit Cards then sending them to him. and the scammer would sell them then look for another victims
just try to think about that, while a guy would purchase paypal my cash then offer to sell it at very low price to buy BTC, while he can buy BTC directly with much lesser fees !!
why a guy would sell bulks of them @ 20% discount up to 40% discount ! that means 2K$ to 4K$ Loss on each 10K$, Very Huge Loss wow
and btw most of the cards you will buy, would be with receipts too