Deals at DealNN today include graphics tablets, hard drives, iMacs and more. The refurbished 20-inch iMac is first on our list. Last week when the iMac line got an upgrade, the prices on refurbished models were slashed at Apple's online store. This model was previously priced at $999 and was dropped to $849. Included is a 2.4GHz processor, 2GB of RAM and a 250GB hard drive, along with iSight we
