That's how entrepreneurs stand out. Good job. Wish I could find a gig like that. I'd be flipping it like a madman.
A couple of times in my life I've found things like that. I know that when it happens, it won't last. So I jump all over it and milk it for all it's worth as long as I can. Eventually it turns into peanuts, or just goes away due to supply drying up, competition entering the market or something along those lines. I hope it lasts and takes good care of you.