I don't see how you feel you got taken. You received everything advertised. You didn't read the fine print.

Inform the seller you would have never bought a copy of the software if you realized it was illegally copied. Mention copyright infringement and he will probably give you your money back and tell you to keep the CD. A similar thing happened to me over some music CDs off eBay. The seller didn't disclose it was copied in the listing. He promptly refunded my money.

James