21.5 inch iMac for $599.99. It is a refurb unit and has 3 months warranty.. can buy additional warranty for $119 from Mack.
21.5-inch (Diagonal) LED-backlit Display with IPS Technology; 1920-by-1080 Resolution
2.7 GHz Quad-Core Intel Core i5 Processor (Turbo Boost up to 3.2 GHz) with 6MB L3 cache
1TB (5400-rpm) Hard Drive, 8 GB (Two 4 GB) of 1600MHz DDR3 Memory
Here is the link