Like some of the others, I don't know if I'd go for one of the random or stock ones, but I might well commission you to make one out of some stuff I've got that I've been meaning to make something from for years if you end up going that route.

From when my Mom and I were poking around on Etsy, doing price comparisons while thinking about selling there ourselves, I'd say those could probably go for up to $60 or more, depending on the materials involved. As someone else mentioned, $40 would be the low end for something like this.