JemJem offers the refurbished 5-lb. Apple MacBook Core 2 Duo 2.13GHz 13.3" Laptop, model no. MC240LL/A, for $149.99 plus $1.99 for shipping. That's the lowest total price we've seen for this laptop, and the best price we could find for a refurb now by $27. It features an Intel Core 2 Duo 2.13GHz dual-core processor, 13.3" 1280x800 LCD, 2GB RAM, 160GB hard drive, DVD burner, iSight webcam, Gigabit Ethernet, AirPort Extreme (802.11n wireless), Bluetooth 2.1+EDR, and Mac OS X 10.5 Leopard.
A 30-day JemJem warranty applies. This comes in "Acceptable" condition, and will show signs of use.