I think some clarification is called for. We seem to be talking about two different kinds of custom patterns. In Iggy's post, his example was the actual pet's name in that animal's shape, instead of just the type of animal. He mentioned that if they weren't willing to pay the extra $20, usually they would end up simply buying the generic puzzle.
To me, that's different than if someone simply wanted an animal that wasn't currently available, but would be suitable for anyone. In that case, I would think they would expect that the designer would add it to his inventory. They are simply paying a premium to get it before he got around to drawing it for general use....if he ever did for that animal.
Would like to note that I love his puzzles, and have 50-60 of them myself. I used to cut them when I was doing shows, until the business went a totally different direction. On the shelf above my desk right now I have the Gorilla, Anteater, Bison and Rhino, all cut from 1" black walnut.
Anyway, I seem to have ruffled plenty of feathers by not being articulate enough to clearly state what I was thinking, so that will be all for me. I'll just fade away and not be heard from again.
So long.