Hello man, please add paysafe metod, because is a best metod to pay.
Hey Vlad, i cant speak for gameflip but i know they are working on more methods to pay. AT the moment i believe its just credit card and maybe paypal( not sure) It most likely would cost them more money to add another payment method in to the system as well as getting approved my the android and apple marketplace. Which takes a lot of time and money to implement.
Gameflip is a pretty safe place i have used my card a few times and havent run into any trouble. And they do have ways to help protect you and your information such as encryption SSL stuff. Plus i think if anything were to happen they’d be abe to help out the best that they can once you submit a ticket. Hope this helps.