LowerPriceUSA via Amazon offers Prime members the Boise 802.11n Wireless USB Micro Mini Adapter, model no. BO-N1557, for $13.99. Coupon code "Z64ITKHF" cuts the price to $11.99. With free shipping, that's $28 off and the lowest total price we could find. (Non-members can spend $35 to qualify for free shipping; otherwise, shipping adds $8.06.) It features data rates up to 300Mbps.