mini pci-express wifi cards: let's say $30 end cost for dual-band

[$16 atheros](http://www.amazon.com/Atheros-AR5008-802-11n-Wireless-AR5BXB72/dp/B004ZHWKM0/ref=sr_1_22?s=electronics&ie=UTF8&qid=1329885631&sr=1-22)

[$30 half-size intel, dualband](http://www.amazon.com/Intel-802-11n-draft-Wi-Fi-Adapter/dp/B0036BJN12/ref=sr_1_24?s=electronics&ie=UTF8&qid=1329885550&sr=1-24)

[$13 intel](http://www.amazon.com/Intel-Wireless-WiFi-Link-4965AGN/dp/B000RFPBQQ/ref=sr_1_14?s=electronics&ie=UTF8&qid=1329885631&sr=1-14)

[$19 intel half](http://www.newegg.com/Product/Product.aspx?Item=N82E16833106079)

[$40 dual-band intel](http://www.newegg.com/Product/Product.aspx?Item=N82E16833106062)