The clear Zone Driven Rocs are some of the hardest and most expensive rocs to find. They only produced a handfull of them (maybe 150 or so originally for the 2001 So Cal Open). Billy Crump ordered them from Zone Driven when he worked for them. Only a handfull were sent out to the So Cal Open..maybe 75 and the rest went out to the West Coast Innova factory. The ones that went to the factory were said to have been given some stamps, some were dyed and some were just forgotten about. There is probably about 30 or so that are known to exist and there is a registry with all the owner's names who still have them. From what Cali told me...Ron Perkins last sold one for around $2k.