Imac barely used for just a few months sell at $1650 OBO

8GB 1600MHz DDR3 SDRAM ‑ 2x4GB
1TB Serial ATA Drive @ 7200 rpm
AppleCare Protection Plan for iMac ‑for three years till August 2016
2.9GHz Quad‑core Intel Core i5, Turbo Boost up to 3.6GHz
NVIDIA GeForce GTX 660M 512MB GDDR5
Apple Magic Mouse
Apple Wireless Keyboard

I bought it in the end of August 2013, barely used it, Apple sells for $1980 plus tax.
I also bought Micro soft office suite and it is good for five years (latest version).