For its newsletter subscribers only, newegg offers the Rosewill 802.11n Wireless USB 2.0 Adapter, model no. RNX-N100, for $14.99. Coupon code "EMCKCKC48" cuts it to $9.99. With free shipping, that's the lowest total price we could find by $15. Features include data transfer rates of up to 150Mbps, WPA/WPA2 encryption, and support for Windows and Mac. Coupon ends July 13.