Stumbled across this ebay'er the other day....
Really cool looking wireless cameras and receivers, some are hidden in fake cigerette and cell phones, rough shipping (from Hong Kong)the seller won't combine shipping on multiple auctions. I can't vouch for the seller but I did buy a pair of cameras and receiver which costs a total of $50. Kinda cool non the less, also has small lcd screens which don't seem like a bad deal, he has some negitve feedback because someone bid on a bunch of his auctions just to raise cain about his high shipping and left a bunch of negitive comments.
I will post the results when I get my stuff from him; I figured with PayPal if the seller is problem, PayPal would have shut him down.