Instructions
Speak with friends and family members to find out if anyone is interested in purchasing your system. This is a good way to unload a console quickly, though you may not get top dollar for it.
Post your Xbox 360 on an online sales site, such as Craigslist or eBay. Both of these have categories devoted specifically to video games. Be sure to list the features on your Xbox 360, as well as any included accessories.
Bring your system to a game store, such as GameStop, that accepts trade-ins or buys used systems. There are several national chains that pay for used consoles in working condition.
Put up sale fliers at local coffee shops or on a public bulletin board at work. Include information on price, accessories and how to contact you.