Hunter The Reckoning / Escape From Butcher Bay

I'm looking for Hunter the Reckoning and the sequel Wayward as well as Chronicles of Riddick: Escape from Butcher Bay (preferably on PC).
Anyone seen any good deals lately?

Gamestop has the Xbox versions of Chronicles of Riddick and the first Hunter game for $5 each used. Wayward is $7.99 used there. Not sure about the PC version of Riddick, but that's probably as cheap as you're going to find for that game.