I understand the impulse to try to keep them together and to reduce your overhead of managing shipping to more people, but it’s probably pretty rare for to find someone that wants a whole set, as they likely have one or more already or they aren’t willing to commit to that big of a purchase of a type/brand/whatever. Like in your fixie thread, I’d be interested in one or two Spinworthys, but I already have a couple and I don’t really want four more. Similar with the TMBRs.