It does not cost the caller to place an "800, 866, 877 and 888" are toll free to the caller. But the owner of the number pays for the service by time on the phone. Anywhere from .05 - .25 per minute. If you have an autodial function you can rack up charges quickly. So if you sell an "888" number and then call it continuously you will be sure to make a profit. So we own our 800 number and someone has us on autodial they keep calling from "314-506-8608" racking up our phone bill. Did this answer your question?