Midcoast Maine Coin-Op Laundry Cost?

[Dave Holman]

In two weeks, I'm installing coin op laundry in a 9-unit building in Bath, Maine. I haven't had coin ops in any buildings yet (usually hookups or nothing). How much should I charge per load to wash and to dry? Mainers, where are you located, what kind of building is it and what do you charge? 

Thanks!