I do them as its a hobby, not a business or to make any money. Ive never sold any of mine. I may sell one or two as space is getting tight. I would rather make my own aswell. Then I can say 'I did that'. None of mine are perfect (except one or two matchbox ones) but I dont care. Ive done them to the best of my ability with the resources ive got.
Some, I do have to say, are fantastic. The work that goes into some (Im thinking of that Rieger Escort Mk3) is just brilliant