01
Pricing does not count users.
This sector runs on volunteers, students, weekend keepers and one person who comes in on Tuesdays. Software priced by user teaches an organization to share a login, and a shared login destroys the one thing a record needs: knowing who wrote it.
So ARK charges for the animals you are looking after instead. Add everyone who works with them - every volunteer, every student, every vet who visits - and the price does not move.