We are grappling with some interesting membership issues.  Could I ask the following questions about what others are doing?

Does anyone calculate profit for their membership program?
If so, how?  (Is it just revenue less costs of operation?)
Does anyone tract retail/catering spend for their members? Is this used in profit calculations?
Does anyone estimate or measure lost admission revenue (through member repeat visitation)?  Is this incorporated in calculation of profit?

Your experiences will help us.  Replies on Museum-L or, if there are issues you would like to discuss personally, to [log in to unmask]  Please note that I am attending the World Federation of Friends of Museums meeting in Sydney all next week, and will attend to any replies on my return.

Thank you all!