eForCity via Buy.com offers its 7dBi WiFi Antenna Booster for $6.99. With free shipping, that's $23 off and the lowest total price we could find by $3, although it was $2 less in December (since expired). This 5x range-extending antenna features a magnetic base and 6-foot cable. It works with select D-Link, Linksys, and Netgear routers.
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