Two places - Ebay or your local pawn shop will take them. If you have the time put them together and sell them off as a "lot" on Ebay. They could fetch a good price if they are good ones. You can also place a little add in your local paper depending on how many you have. Good luck!
A flea market as well..or you can list them on craigslist for sale, it is a free site to post ads, etc. Hope this helps. Good-Luck.
Sometimes, there are exchanges where you can buy or sell used DVD's, CD's, etc. Check around, there may be a place like that nearby.
You could sell them on eBay but I like to sell mine at game shop. You could sell them there or get a discount on a game or an another movie. Hope this helps
I ended up selling mine to this place in Long Island City. It was super fast and easy and I got enough for them to take my hubby out for a fancy dinner. This place is great because it takes about 20 minutes, they look over everything and give you your money. They offered to ship everything for free, but I wanted to be sure I wasnt being scammed so I drove down there myself. The phone number there is 718 729 6400. Give them a call, it was totally worth it.