Dec 2020: I bought this iMac for ~$750 from CTS Warehouse (there's more than one seller for this item). Overall, I'm pleased with my computer. It looks "almost new" with only a couple of minor smudges from leftover sticker/label glue spots on the back, but pretty solid overall. I haven't had any problems installing software or registering my system. The retina screen is pretty sweet and had no dead pixels nor other imperfections. I got a Magic Keyboard and Mouse, although these were of the first generation. I didn't get the Gen 2 Keyboard and Mouse that would've come with a 2017 system. The keyboard and mouse were also very, very, very dirty.  As in their previous owner ate every meal at his/her computer. In any case, the keyboard didn't even work. Frankly, it was an insult to include these. I know other people here didn't get a keyboard or mouse, but I would've prefered that to having to deal with someone else's trash. I ordered a new set from Ebay for an addition $100 to the total cost.July 2020 Update: My iMac was slow... it took between 3-5 minutes to boot-up and opening files took for ever. Even loading web pages was slow. I started to doubt that the computer's spec were as the seller described (the "About this Mac" information can be faked). It turns out everything was as descibed, but the computer was still slow. I went to OWC and bought a 32GB RAM Kit and a 480GB SSD Hard Drive (~$250 combined). I watched YouTube videos to learn how to install these myself. It was an involved, but not impossible process for someone without experience. Now my computer is snappy.  Boots in less than 30 secs.  Web surfuring is fast.  Documents load in a flash. A new iMac with similar hardware sells for around $2,300. All together, I spent about $1,100 ($750 on iMac, $250 on upgrades and $100 for a new Magic Key Board & Mouse). I'm pleased with the investment. But it took some work and additional $ to get this system to where I wanted it.  Other folks may not be inclined to spend the additional money or time.