newegg offers the the ASUS N900 802.11n Dual Band Wireless USB 2.0 Adapter, model no. USB-N66, for $64.99. This $10 mail-in rebate cuts it to $54.99. With free shipping, that's the lowest total price we could find by $10. It features a data transfer rate of up to 450Mbps, 3-point orthogonal antenna design, and more. Rebate expires April 30.