There's nothing wrong with the pricing at the moment anyway. For the amount of time and effort that is put into these games and the rising cost as technology advances I think £30-£40 is pretty damn reasonable, and if you're a complete cheapskate then they normally drop sub £20 within a few months.
I think people seem to forget that.
Game prices have been pretty consistent for years, despite inflation. We've got it far better than in the cartridge days when you could be paying £50-60 for a game.
I think cracking down on pre-owned sales is more than anything likely to hit children the hardest. When I was a kid, I could only buy games by saving up, or waiting till Birthday or Christmas. As it currently stands, the pre-owned market has allowed many children to trade in games every week for a tiny bit of pocket money for the next one.
As I've said before though, there are plenty of other people in the demographic. I've got friends who earn good wages, but choose to do pre-owned trades because it's a little cheaper and gets rid of games they will never play again.
I do think it's important that people should be able to sell their games, but the pre-owned market does need revising.
What we don't yet know is how much of an effect the system that Publishers have been using of putting in a code to unlock multiplayer or content has had on pre-owned sales. Are people now choosing to buy new copies? Rather than buying a pre-owned copy and then having to buy a code.