Cash For Old Electronics!

Best Buy - Best Buy’s Trade-In Estimator figures out how much your old electronics (bought anywhere)are worth. You print a prepaid shipping label and mail your items to the trade-in center and get a Best Buy Gift Card. There's an in-store option as well, but that is only good for electronics purchased at Best Buy.
Go here: https://www.bestbuytradein.com/bb/

Walmart - Get an offer for your old electronics and accept it. Print a prepaid shipping label and mail your items to the trade-in center and get a Walmart Prepaid Visa Card.
Go here: http://walmart.gazelle.com/

Costco - Get an offer for your old electronics and accept it. Print a prepaid shipping label and mail your items to the trade-in center and get a Costco cash card. http://costco.gazelle.com/

Sam's Club - Get an offer for your old electronics and accept it. Print a prepaid shipping label and mail your items to the trade-in center and get a Sam's Club Gift Card.
Go here: https://www.econewonline.com/samsclub/

Target Get an offer for your old electronics and accept it. Print a prepaid shipping label and mail your items to the trade-in center and get a Target Gift Card.
Go here: http://target.nextworth.com/

Retrosoftware.com - Sell old, deinstalled software. Request a quote, accept it, ship it (you'll be reimbursed) and wait for your choice of a check, or, deposit to your Paypal account.
Go here: http://www.retrosoftware.net/sellnewusedandoldversionsoftware.htm

EZtradein.com - Get an offer for your old electronics (including games) and accept it. Print a prepaid shipping label and mail your items to the trade-in center and get your choice of check, Paypal, or Best Buy gift card.
Go here: http://ez.eztradein.com/eztradein/index.cfm

Gazelle.com - Get an offer for your old electronics (including games) and accept it. Print a prepaid shipping label (they'll also send you a box if requested) and mail your items to the trade-in center and get a check in about a week!
Go here: http://www.gazelle.com/

Toys R Us - Trade in your old video games for Toys R US gift cards online (select stores are also accepting hardware)
Go here: http://www.toysrus.com/shop/index.jsp?categoryId=3088666