Answering myself here, I wonder if promising to buy at least five would be enough to get a maker to put something like that together.
After seeing lots of stories about people starting something then stopping because of a reaction, sting, burn or hives, I started wondering what happens to the rest of their supply. Do they pass it to someone else or just get rid of it? It seems like it would make sense, though probably hard to manage, if makers offered some kind of sampler set with different options. That would let you try before buying months worth of one thing that might not suit you. I would pay extra for a multi-pack like that even if it meant trying each one at your own risk. Has anyone talked about this before and is there interest? Or do you just throw it out when it does not work for you?