Newegg.com has the Rosewill RNX-N150UBE Wireless Adapter for a good price.

Item has a rating of 4/5 from 127 reviews

Regular Price : $19.99 Shipped

1. Neweegg Price : $14.99 Shipped
2. Use coupon code EMCKAHK43 to get $5 off
Final Price : $9.99 Shipped