We need an elaborate percentage type calculator made in Excel. We have an example but it needs to be refined.
Example fields: User selects location of event, number of people that attend the event, and where the user expects to be in the event.
Then excel should come back with a $.
That $ will be based upon the number of other people in the event times the cost to attend, divided by 2, and adding 400.
PMB for example. easy job for excel whiz