answer:I think it’s a great idea, @Ltryptophan. It would require some working out, though: you’d have to know the price in advance and agree to it, and there’d have to be some kind of cancellation penalty, and so on. But I can imagine someone figuring out how to make a go of it, at least on a trial basis. As for the patent office, I’m not qualified to offer legal advice, but I’d be pretty surprised if such an idea were patentable. There’s no product as such. How could you stop anyone from copying the idea? You couldn’t. I sure think your question itself could use a much better and clearer subject line.