On top of the doubts already raised by the posters above me, I would like to say that many trusted (or at least somewhat successful) virtual card sellers in these forums have tried doing this before but they have all gotten restricted in some way. For example, in my end, I bought a card which worked fine for a few months but later the issuing bank restricted the card usage until you could provide proof of identity to them in person. In this case, pretty much everyone lost all of what they had, as the funds were just frozen. Luckily for me, I had no more $5 remaining inside. I would just note that no matter how reputable or honest the seller might be, these sort of things can still happen.