Only 'deals' I ever really got on consoles happened 2 times. One was from info given to me by briansraregames from CAG and was a $10 PSone/LCD combo from Kmart on clearance.
The other instance was my one slim PStwo, which I got with credit that I scored by trading in copies of a game called Powerdrome Racing for PS2. It was $3-4 @ Gamestop, but got $13-14 in credit @ FYE. I must've traded in 12-13 copies of it, but over time it ended up giving me enough to get a slim PStwo.
Even better was the fact that the slim PStwo from them had a $30 rebate at that time, so I got $30 back(after about 6 months of aggravation, their rebate fulfillment people suck). They ended up paying me my rebate @ store level, since every time I called their fulfillment people, they told me I had sent in for a $3 CD rebate. Funnier still was, I received a rebate check(looked like a postcard) finally @ the 7 month point, which I didn't even hesitate and cashed for all the time/aggravation of having to wait for their dumbasses to send me my rebate in the first place.
So, in the end, I got the slim PStwo for free, since the games I traded to get it didn't cost $60 total.