they do pay postage.. at least with the two blu-rays I sent them.
They gave be a postage label to stick to the package.
I was looking at the payment page sourcecode... still traces of "bitcoin" in there.. couple of things were commented out.
Unless they've changed it since I last checked they said you were responsible for paying the postage and ensuring they received it. Did they send you a label out in the mail or did you just print one out?