70 bucks is a bit much... 60 bucks eehhhhhh I usually only buy games new when they first come out if they're ones I REALLY want, so I'd be willing to pay 60...
but that's not even really confirmed yet...
As for graphics... I doubt the jump to next gen will be as big as it was last time...
But you never know... Maybe we'll all be blown away when we see games in MOTION... All the better effects, lighting, smoother animation and framerates, and overall better graphics... All working together...
I highly doubt gaming will crash and burn next gen

Anybody who thinks it will is just buying into Nintendo's hype about how gaming is going down the crapper and needs some amazing new completely different way to play games (being delivered with the Revolution!)... Which might just backfire on them and scare away a majority of the gaming community which happens to be perfectly fine with gaming the way it is...
It's all speculation at this point...