D-Link Dwl-7700Ap Airpremierag 11/54/108Mb Wireless Outdoor @ Wyntec ....... $1.10.....!!
I havent even bothered testing the price on this because I suspect its a bargain.
Its an outdoor antenna, 802.11 a/g so its compatible with pretty much all the cards out there at the moment but it'll get you 108mb which is neat.
Am still laughing at the price.... it'll cost more to post the thing