As far as I know, the rest of them just aren't up yet. Sorry.

You should really tell your mom that PayPal is the internet's most trusted online payment service, and you don't even have to register for an account if you don't want to. It's really quite safe, and it's only $4 American each of your money if you do digital download. Seriously, try it with just one EP and you'll be fully satisfied, with no worries.