We operate a adult phone line for people to call and talk one on one, as well as enter into chat rooms and talk to others. The access is an toll free 800 number. I would like to pay per valid call though the system. No gimiks, or no pay. This would be a marketing effort of any means on your part. I can provide more detail later but quick examples are.
1on1 talk is 3.99$
and Live chat rooms bill at .69$ per minute.
I would like to know estimatd cost per 500 users billed by system.