Ebay only allow sellers to accept credit cards as proof of age.
The only thing you can do is ask a friend/relation with a credit card to pay for the items for you and for you to repay them.
"There are two ways to be fooled. One is to believe what isn't true; the other is to refuse to believe what is true.”
Søren Kierkegaard, Danish philosopher (1813 - 1855)
