Hi,
I got one from him on eBay about 6 mos. ago. It's very well made, but as mentioned, isn't theft proof. One thing in your favor is that it is custom made for the Boxster which could discourage some would-be thieves with thoughts of using it on their cars, 'course, there's always eBay.
Like I said, have had mine for 6 mos. - never put it on once - great investment for me...
Happy Motoring!...Jim'99