My club was offered the use of a simulator some years ago. It was an interesting experiment, but didn't get much use.
My view was that depending on the level of complexity of the simulator and the ability to book the time, it should be treated either as an arcade game for rainy days, or a supervised training session.
Costs can then be worked out accordingly. Up to £5 per/hr for the general stuff, or it won't get the use, with a proportionate increase for supervised instruction.
But beware of over-optimism about its use.