It's important to note the difference between an Apple refurbished iMac and a 3rd party "refurbished" machine. An Apple refurbished iMac will be a basically new machine that is tested and reboxed in a white box with all the original accessories. It will come with a 1 year warranty and be eligible for AppleCare+. A 3rd party "refurbished" machine is usually a used corporate machine that has recently come off lease and is resold as being "refurbished". Be careful as these machines are often well used and the "refurbishment" consists of little more than cleaning the case and screen and making sure it turns on. If I'm buying used, I much prefer to buy from a private party that has taken care of his iMac.