I had an iMac for 15 yrs until it finally became obsolete so I replaced it with a MacBook which is great but when I came across this renewed iMac I took a chance and ordered it with the 90 refund promise. Received it faster than expected, set it up in minutes and it looks and works perfectly. The only issue I have is that it comes with a non-apple wired keyboard that's cheap, bulky and ugly, windows based keyboard that I hated so I replaced it immediately with a smaller, wireless Apple keyboard that is easier to use and looks so much better.  If you need a new computer and are willing to take a chance, what do you have to loose?