It's also possible to just undercharge for support (and maybe even advertise that fact to limit expectations), but use the money as a filter. Ideally, you coul

It's also possible to just undercharge for support (and maybe even advertise that fact to limit expectations), but use the money as a filter. Ideally, you could even charge exactly cost, and then you wouldn't have misaligned incentives (and I would factor into the cost the information you'd gain from working with customers, so I'd say that to exactly align incentives, you'd want to charge somewhat less than the "support department" costs).