Today only, MidnightBox offers the refurbished 4.7-lb. Apple MacBook Intel Core 2 Duo 2.4GHz 13.3" Widescreen Notebook, model no. MC516LL/A, for $684.95 plus $3.99 for shipping. That's $15 under our December mention of a refurb and the lowest total price we could find for one today by $62. It features an Intel Core 2 Duo P8600 2.4GHz dual-core processor, glossy 13.3" 1280x800 LED-backlit LCD, 2GB RAM, 250GB hard drive, SuperDrive, multi-touch glass trackpad, AirPort Extreme (802.11n), Bluetooth 2.1+EDR, Gigabit Ethernet, iSight webcam, Mac OS X 10.6 Snow Leopard, and more.

Note: A 90-day warranty applies, although it's unclear who backs it.