Personally I'm not buying a PS3 until next summer. I figure that I'd be better off making a PC setup since it's been so far delayed (I'm talkin 2001 delayed here) and It's high time that I have a PC that's capable of playing the latest games, and won't die on me thru hardware failures and such. In the meantime, World of Warcraft is plenty enough until then. I still haven't even done any of the 20man's, haven't even gotten CLOSE to the 40's and there are going to be new raid dungeons coming out in the upcoming expansion.
Buying multiple PS3's for ebay sounds really good, but that's if I can get enough money by then to even produce enough for one, let alone 2 or 3. And screw the Wii. I'll let my friends buy it and play it at their house. I bought a GCN at launch, and while I was happy with it, the early adopters had the overheating issue and games would freeze and it irritated the hell out of me.