Selling my PSP?? How much??where?? ?

It depends on what you want to get out of it. Are you looking to get the most cash you can out of it or are you trying to make a few quick dollars? If you are trying to make quick money, I would sell it on Ebay, and as a last resort, Gamestop(this is an extreme last resort, only go here if you have to as they will give you the least money possible, but almost always buy it from you). However, if you are trying to make good money off of it, all I can say is good luck. I wouldn't wait too long for the best offer, because there is already the PSP 3000 and the PSP Go out, and with another on the way(Next Generation Portable-NGP),the PSP slim will be a thing of the past and you won't get much at all for it. I would recommend getting an offer and sticking to it. If you sell it right, I would say you could get about $160-$200 dollars out of it.

Ebay is pretty good.

I have always used Craigslist. For the price look on Craigslist and see how much they are going for in your area. Ebay may get you a slightly better price. But Craigslist has always been easier for me to just meet someone on the way home after work, there isn't any shipping I have to worry about and if I post in the evening I usually have quite a few answers by the time I wake up.

Ebay.. craigslist really doesn't give the impression of " Come and buy a video game system ". More people are on Ebay these days anyway, and you are likely to make some good cash on it..