MacMall offers the 5.5-lb. Apple MacBook Pro Core i7 Quad-Core 2.2GHz 15.4″ LED-Backlit Widescreen Notebook, model no. MC723LL/A, for $1,639.99 with free shipping. That’s tied with our mention from three weeks ago and the lowest total price we could find by $20. (For further comparison, we saw this system available for in-store pickup only for $140 less in January.) Features include an Intel Core i7-2720QM 2.2GHz quad-core Sandy Bridge processor, 15.4″ 1440×900 LED-backlit widescreen LCD, 4GB RAM, 750GB hard drive, DVD burner, AMD Radeon HD 6750M 1GB video card, 802.11n wireless, Bluetooth, Gigabit Ethernet, Thunderbolt port, webcam, multi-touch trackpad, SDXC card slot, and Mac OS X Lion.