Newegg offers the TRENDnet Dual Band 802.11n Wireless USB 2.0 Adapter, model no. TEW-684UB, for $30.99. Coupon code "EMCPAPF58" cuts it to $14.99. With free shipping, that's tied with our July mention as the lowest total price we could find by $15. This adapter features dual bands, up to 450Mbps data rates, and USB 2.0 connectivity.