Refurbished computers are used machines that have been repaired, upgraded, and cleaned for the purpose of reselling. They're usually open-box returns, overstock, or models with minor cosmetic damage (scratches, scuffs, etc). Refurbished computers can be a bargain hunter's dream as they're likely still in good (or great) condition and you can save a lot of money. That being said, refurbished computers can have their downsides as well. In addition to cosmetic blemishes, some of the internal components might be a little older or outdated and they might not be in peak condition due to previous usage. If you do consider buying a refurbished computer I recommend looking at eBay as they offer a one-year warranty. You can also check out manufacturer's retail storefronts like Dell's Outlet Store and Apple's Refurbished Store—just be sure to look at the terms of warranty offered before purchasing.