Plenty of people are looking for quality and willing to pay. They are usually the ones that are dissapointed, as most anything built to a low price ends up looking it, for the most part.
I am still looking for a decent quality jewellery box for my wife, as a gift. I have found many(!) cheap and nasty boxes, and some very huge and expensive ones ($2k+, a bit much for my budget). So far, the best one I have found is on fleabay, but it is made in China, so, without being able to see it firsthand, I am REALLY unwilling to commit to one, lest I find myself with a POS, even at the price level it is at ($300+US). It is not the price that is holding me back, just that I cannot assess the quality.
I would suggest that a couple boxes, ready to go, to fit Colt SAA revolvers would be a good bet. Lots of them around, and lots of guys have nice ones.
Were I in your shoes, I'd be asking the guys that sell the high dollar guns, what the demand would be. They would have a better idea of who is willing to spend what. I would also get my head around how to get the dimensions correct, without having to be responsible for the safekeeping of someone else's collectors piece.
A couple nice business cards would be a good investment, as would a couple decent pics on a website.
Cheers
Trev