CowBoom offers the used 4.5-lb. Apple MacBook Pro Intel Core i5 2.4GHz 13.3″ LED-Backlit Widescreen Notebook, model no. MD313LL/A, for $899.99 with free shipping. That’s tied with our mention from two weeks ago for the lowest total price we’ve ever seen for this model. (It’s $229 less than the best total price we could find for a new one.) Features include an Intel Core i5-2435M 2.4GHz Sandy Bridge dual-core processor, 13.3″ 1280×800 LED-backlit widescreen LCD, 4GB RAM, 500GB hard drive, DVD burner, AirPort Extreme 802.11n wireless, Bluetooth 2.1 + EDR, SDXC card slot, Facetime HD webcam, Thunderbolt port, and Mac OS X 10.7 Lion.

No warranty information is provided.