The trick is you're going to need to clean them up such that people are willing to pay more than they cost you. This isn't an infinitely large market and you'll be working for practically nothing, so be sure you really do love the process and the profits are incidental or you'll get sick of it REAL fast. Also, don't expect to put much mark-up on your work. A LOT of people are working on tight budgets for their hobbies and just won't pay the ridiculous numbers I see half polished Wade & Butcher items come up for on fleaBay.