There's an option to pay via PalPal which doesn't need credit card (does require you to have a way to transfer funds beforehand though, via say online banking). But the Paypal method does not require a credit card. Everything about it is here.
If you're available now, why don't we do an initial trade of Magby, Starly and Budew for Blissey, Abra and Dratini. I have a ton of happiness-raising berries I can use on Magby to instantly evolve it. Then we could do a second round of trade evolutions. I can send you some more DW pokemon or starters for your help there.