I have two PS 3s, same problem as L4L. Also one of the advantages of consoles over PCs is the fact that one can buy pre-owed games and trade them in later, this measure would make some people included myself to go back to buy games for PC, they cannot be traded but at least can be given to somebody for most games.
For the largest part , PC games can indeed be traded or purchased second hand , unless the game in question is tied to a service such as Steam , Origin , or Games For Windows Live . Some places such as Gamestop have basically stopped retail of PC games , so getting PC games second hand is largely left up to trading over the internet , or second hand stores .