Here's an easy fix... charge them a yearly or longer fixed duration license fee. Like say 1, 3, or 5 years. Make it expensive enough that monthly pricing makes

Here's an easy fix... charge them a yearly or longer fixed duration license fee. Like say 1, 3, or 5 years. Make it expensive enough that monthly pricing makes some sense. Also, charge for support separately on a deal like this as you are unable to calculate their support needs on a longer time horizon.