Amazon offers the Brother Wireless All-in-One Laser Printer, model no. MFC-L2700dw, which also copies, faxes, and scans, for $109.99 with free shipping. (Office Depot charges the same.) That's $10 under our August mention and the lowest total price we could find by $20, outside of the mention below. It features 802.11n wireless, up to 2400x600 dpi printing, up to 27 ppm, Ethernet, and USB 2.0.

A close price, Newegg has it for $109.99 plus $2.99 for shipping.