im a ps3 fan and i play on buying one at some point, but im almost very sure that this whole buying up a bunch of ps3s and selling them on ebay scheme wont work... and heres why...
1. the demand wont be there from the start... people are already very skeptical, there arent any huge exclusive launch titles (ie halo, gta) PLUS the wii is coming out a week before, as well as there being plenty of 360s to buy
2. the price is already too high, this is not a 200 dollar item that people are going to pay double for... at 500 or whatever it comes out at its already borderline too expensive for most people, people arent going to pay a grand for one on ebay just so they can play the same games that are on the 360 and blue ray dvds
3. too many people will be doing it... every guy without a job or college degree thinks they are the only ones with this played out idea, ebay is going to be flooded with them
im not saying you might not make 50-100 bucks in the end, but the idea that you are going to make any more then that is highly unlikely