>Steam has a bit of a bargain bin but I suspect that a Playstation bargain bin at Walmart will do far better than the same bargain bin for PC games.
The Steam quarterly sales are huge, also the weekly Humble Bundle. I'm over 100 titles now, simply because a very large number of them cost me almost nothing. Also you can play games on decent settings for around $600 and have a computer you can do other things with too. $1200 is a damn fast computer.