As I mentioned on the Wii board briefly, as of today, it's 100 days to the launch of the PS3...so if you can save up an average of, say, $7 a day from now until then, you'll be able to barely afford it and maybe a game depending on however much in taxes your city/state/province/country will put on top of that.
Now, $7 a day isn't hard at all, even if you have a crappy, low-paying job with too few hours - and you may already have money saved up for anything - but is it worth it, and would you want one at launch? From all that this thread points out, this is the definition of a chancy purchase.