yeah, I saw those a while back. kinda like the Fairport card surge that is no longer around. However, being a stickler, I wanted a genuine apple brand.You need one of thesenice score. I paid $70 for my airport card in this here pismo. still not regretting that investment. they can go for $100+.
enjoy it.
-digital
http://tinyurl.com/36dmqm
(Extremely long ebay link, so I shrunk it down so as not to PO the admin of this site)
At any rate, this guy has found the original supplier of Airport cards to Apple and they are still selling them in generic form. Your Mac will even recognize them as official Airport cards. He has two types. One that duplicates the original exactly, and another that is slightly smaller for machines where space is more limited.
-digital