I've bought a few pics of my race car in the past, but I haven't seen any taken at a bike race or a motorcycle event that make me want to pull cash (or credit card over the web) out of my pocket. I have seen a few of my kids that I'd have paid to have a copy of, though. A friend of mine who works at a local newspaper tells me that if he puts pics of kids in the sports page it sells papers, adults don't sell. Good luck with it and I hope you find a good niche for your work.