Wow!
A couple weeks ago at CompUSA's site they had a 802.11b Cardbus card by SMC that was FREE. It must have been a quirk caused by too many rebates applied (-$10 instant, and -$30 mfr mail-in, for a $40 card).
If I were smart I would have posted it here but I forget, something had me away. Seems like it'd be bound to happen again, though.