How much to sell a PSP 2000 for?

Your problem is wanting to sell your entire collection. Grant it you ahve decent taste in games, the PSP2000 would be worth about $100 if it is in great condition. The games would range from $5-$15 pending on the person buying. That is where your problems are, you spent a bunch of money on this stuff and you will not get the kind of return on your investment you are seeking because piracy is way too rampant on the PSP.