Well, because that's a pretty backwards way of paying for something and I don't really want to have to do that. I'd love to just set it up to where it would automatically take payments from my Paypal, but that service isn't supported. Furthermore, if I bought a 60-day card code I'd be able to get my 60-day bonus'. Even when I tried to look into paying with Crysta it doesn't even tell me how much it would cost because I 'still have game time left'. As in about 4 days left now.

Though I guess I have my answer (or lack of one). I'll try looking at my local Game Stop or something...