[Organizers] sliding scale / open payment language for your dance?

In Atlanta for our contra dance, we are moving away from a set price to a donation / sliding scale / pay what you can afford model. We are having a surprisingly challenging time finding the specific language we would like to use. It seems like every short pithy way we put it leaves some important concept out. I'm curious - how many other dances out there are using a sliding scale or donation model instead of one price for all? If so, what language do you use on signs and advertising and at the door? Do you have a jar that people put cash into, or do they still give the money to someone at the front door? Does anyone have any data about whether this changes your usual gate receipts - lower, same, higher - initially or over time? How do you handle the stigma of someone paying less at the door than your 'suggested donation'? Other thoughts, comments, and experiences? Thanks Seth Tepfer Seth Tepfer, MBA, CSM, PMP (he, him, his) Senior IT Manager, Emory Primate Center