Mostly looks like a thin veneer applied to a basic case, probably not a lot of overhead. I suspect the handmade aspect only refers to the gluing of the veneer and the application of finish. With machines providing the engraving, wood burning and actual cut outs to glue up they can probably turn them out quickly. So if its only a couple bucks to make and you can make a dozen or more an hour then it wouldn’t be too hard to turn a good profit.