Graynet - anon/encrypted piracy

P.O. Box may be not the safest way of collecting the money; encrypted anonymous cash transactions would be much better; also, one can not only advertize on the net, but provide the service. Suppose I open a virtual store selling illegal/copyrighted info - software, music, movies, porn, etc. Pirates receive royalties from the stuff they upload; customers, naturally, pay. All anonymous and encrypted and based on a network of hard-to close (offshore?) remailers. The potential revenues from such a store seem well worth the effort of setting it up. The question is how can they close it? -- Sasha?