newegg offers the refurbished Netgear 802.11n USB 2.0 Adapter, model no. WNA1100-100NAR, for $6.99 with free shipping. That's the lowest total non-rebate price we've ever seen for a Netgear 802.11n USB adapter by $1. (We saw it for $3 less, after rebate, in February. It's a current low by $6.) It includes an adapter cradle for desktop computers.

A 1-year warranty applies, but it's not clear who backs it.