One more suggestion, threads become more appealing when the appropriate letters are capitalized.
As far as the PS3 goes, never start high, at most start with 150$ and work your way up. Buy it now should be 300-350......never expect to get very close to retail online. My suggestion, based on location, would be CraigsList, because if it's populated enough (your area) people would pay 400-415 for it, in which case I would put 400 on it and if the person is interested enough, go for 415 (saying that someone just said 410) and then that would be good. If they want to back out after that statement, say the other buyer went back on it's deal and that its 400 again.
With that said, why give up a new 400 dollar ps3 in the first place? Gift? Purchase but past the 30 day limit? It just doesn't make too much sense to me.