I agree completely, you can audit printing easily, controlling it is also easy and cost effective, getting the SMT/SLT to agree to changes, especially to staff controls is the hard part.
Controlling students with quotas should yield a 15%+ reduction in costs, add in staff and that can easily become 30%+ savings.
Remember...it's not just the toner cost, it's the obvious paper, replacement and ongoing maintenance of devices, updating and management of queues as well as more which can be reduced by reducing the load and usage of devices.
Pcounter has had a clean up of the controls ~ 12 months ago but it's development is prioritised towards functionality. It's also more advanced on the copier control (multiple manufacturers), non-authenticated printing and print room controls.
It does much more than can be document on a simple datasheet - if in doubt, ask!
Happy to answer any questions here or via PM - have supported or worked with Pcounter for over 12 years now - positive and negative feedback welcomed!