Thanks for the answer, but you having access to all the details isn't good: it means all buyers will have to trust that you won't use the card, because you will know the number, expiration date and CVV.
It would be much more secure if you sold the cards inside the unopened letter from the bank.
thank you for your advice, i know about that, but i already have my customer and they trust me, just want to reach some other (international customer) but if i can't it's not a problem

thank you.