Skateboard potential
As someone who used to be in the skateboarding industry (me) to the right end user the price should be in the low-mid $XXXX. As much as we think as skateboarding as those kids running around the industry as some VERY deep pockets behind the scenes. The top two forums that show up in google have 7000 and 4500 reg'd users. I'm sure the right company could grow the forum once they buy the domain (using some of their signed up skaters to get things rolling).
The ASR show in San Diego is huge. I'd start by going through the ASR show list or picking up a Transworld skateboarding mag and start contact the various companies.
Good luck and I'm sure someone will bite.