Did anyone hear the quote. In most states a verbal contract is binding if you have a witness. 100.00 is way to high in its self. I would paint them all day for 50.00 and feel that I ripped everyone off that paid that.
on the other topic I would build you a stand and paint it for 300 no problem. Steal is cheap and so is normal paint which I would assume you would use. But maybe its a work of art in which case I would understand the price