Expercom offers the Apple iMac Intel Core i7 2.8GHz 27" Desktop, model no. MC507LL/A, upgraded with 8GB RAM and three years of AppleCare for $1,799. With shipping around $22, that's the lowest total price we could find by $122. Features include an Intel Core i7 2.8GHz quad-core processor, 27" 2560x1440 widescreen LCD, 8GB RAM, 1TB 7200 rpm hard drive, DVD burner, ATI Radeon HD 4850 512MB graphics, Bluetooth 2.1+EDR, Gigabit Ethernet, 802.11n wireless, iSight, and more.