i painted my ltr450 all i did was use a bit of rubbing alcohol where i wanted to paint and had at it. i did the plastics, battery cover, and chaingaurd. its been holding up for over a year and a half already, i dont have any recent pictures of it but here are some old ones
yea it also depends on the brand of paint and the type. pearls,candies,etc combined with different flakes makes the prices skyrocket. i nomaly use left over paint from cars we have done prior.