Bloody hell there are some making a lot of dosh online huh. I should open an eBay store!!!
Got mine here for $15 if my memory is good. If your Chinese is good enough, you can order it from the Chinese eBay at
Porsche Piwis Cable for Rmb150. (Aprox $18).
Works flawlessly up to version 5 of Durametric.
LOLLL for $150 here you can buy the PIWIS I. Allows you read codes, program the ecu, new keys, setup all Porsche features....auto door lock and list goes on forever. Very useful.... I kinda love it