Newer copies of SH III don't have Starforce & can be picked up cheap. I picked one up from NWS here:
http://yhst-12000246778232.stores.yahoo.net/ a few months ago. I paid about 10 bucks US & it came pre-patched. There are no disk checks or codes to keep (for reinstallation) and once the game is installed you don't need the dvd to play your game.