I have refused to buy a PS3 because I get all preachy about how corporations should conduct business, and Sony's been on my shit list. Partly because they were charging too much for the console, and they've been so stupid about proprietary formats. Ratchet and Clank has been the one franchise that's really made me question my decision to not buy one........but I just ordered a PS3 yesterday. This will be the only game I play for a while.
At least you got it for $300. I bought mine almost a year ago, before any kind of price drop. Don't regret it though, since I've had a ton of fun with it the past year. You'll probably want to play Tools of Destruction and the downloadable game Quest for Booty before this new one, since they're part all part of a trilogy.