Can I use PayPal for non-US iTunes Store payments?
Payment methods vary greatly among the many iTunes stores around the world and are often fit to the local market. In Germany, for example, it's possible to pay via direct-debit, because this is a very common way to pay there. There are iTunes stores (additionally to the US one) which accept PayPal - UK comes to mind. In your case I would check my iTunes account to see whether it is possible to pay via PayPal.