Do what you want to do, it sounds like you've already been thinking about this a lot so you've already made up your mind?
Anyway if you're going the fleabay route you might want to consider picking up a backwards compatible used 20/60/80gb PS3 instead. That way you can use it to play your PS2 games and trust me, they do actually look nicer on my 60gb than they ever did on my PS2 and I swear they even play smoother too. Since the HDD is upgradable even the 20gb version would be pretty good if you can manage without Wifi/don't have a handy wireless bridge.
Otherwise check out the Xbox 360 - if you're a longtime Nintendo fan you should know who Rare are and you can pick up an Arcade for $200 so you're not paying out any extra versus the Wii and you should be able to play 90% of the games available for the PS3 with the different exclusives making up the difference.
Tease.











