They've passed that point for me, around the PS2 generation. I remember big name PC games costing £30, then I think it was PS1 which pushed it up to £40 and each generation has knocked a tenner on until you've got the ridiculous state of affairs where I saw Fable 2 on sale, second hand, for £40!
Best bet is as above, play an outdated system. A year or two ago I got an Xbox for £50 with Halo 2, Fable, Forza and PGR. Games cost about £10 second hand as well. But in the end I upgraded because it was really starting to get hard to get decent games, with the second hand stores dropping Xbox shelf space to a couple of feet. That combined with GTA IV and Sainsbury's selling 360 Premiums for £140 clinched it.