I managed to place an order on cdmarket.gr. I could choose my country as a shipping destination (Netherlands) and even a shipping method (personal delivery by cdmarket for 4 euros or delivery by Greece Post for 8 euros). There was no way to make an immediate payment, so I guess I'll just have to wait for them to e-mail me.

I think it wont work though, since the shipping methods mentioned (especially the 1st one) don't reflect the destination country I choose....