Guess you have to be lucky to find one at a reasonable price, I had been looking for over 2 years to find one...had lost several auctions at Ebay and was also willing to pay lots of $$$ to get one but it didnt matter since the auctions were sniped to pieces in the last seconds of the auction.
Just have faith and keep looking and ask around if someone has one, put a wanted ad at amibench for one.