MegaMacs offers the refurbished Apple iMac Intel Core 2 Duo 2.8GHz 24" All-in-One Desktop (pictured), model no. MB325LL/A, for $739.99. With free shipping via coupon code "DMFREESHIP", that's $60 under our refurb mention from two weeks ago and the lowest total price we could find for a used model now by $129. (It's also the best price we've seen for a refurbished unit of this model.) Features include an Intel Core 2 Duo T7700 2.8GHz dual-core processor, 24" 1920x1200 LCD, 4GB RAM, 320GB 7200 rpm hard drive, SuperDrive, ATI Radeon HD 2600 PRO 256MB graphics, Airport Extreme (802.11n wireless), Bluetooth 2.1 + EDR, iSight webcam, and Mac OS X 10.6 Snow Leopard.

the refurbished Apple iMac Intel Core 2 Duo 2GHz 20" All-in-One Desktop, model no. MC015LL/A, for $499.99. With free shipping via the above coupon, that's tied with our mention from two weeks ago and $162 under the lowest total price we could find for a comparably equipped used model elsewhere. Features include an Intel Core 2 Duo 2GHz dual-core processor, 20" 1680x1050 LCD, 2GB RAM, 160GB 7200 rpm hard drive, SuperDrive, NVIDIA GeForce 9400M 256MB graphics card, Bluetooth 2.1+EDR, AirPort Extreme (802.11n wireless), iSight webcam, and OS X 10.6 Snow Leopard.

A 30-day MegaMacs warranty applies. Both deals end December 25.