The single user dialer or the trial can be converted to a multi user Predictive Dialer with all your settings intact. You get upto 6 lines per agent. You pay 5c/hour per user, in groups of 10. Telephony costs are excluded; they start at USD0.0099/min for calling and USD3.99/month for incoming numbers. See right pane for details of the Predictive and then take the free trial to test.