I have a nice little Darryl Helm box,,,spalted Sycamore with a cherry lid,,has a nice medium hen sound it's new. I was going to use it on rain days when I didn't want to take my expensive boxes out, but I'd just has soon see it go to a good home where it will and should be used a lot. $20 plus $5 for shipping if interested.
Actually if doable raise your budget to $40 and try to snag a spring creek box from here that leopardwood/curly hard maple or zebrawood/maple that's on here "right now" looks like a fine deal for $40.