Overall, the number of calls received or generated determines the actual amount of the bill. The payroll structure of your telemarketer also affects the bill. For companies that do not offer commissions to TSRs, you can expect the base hourly charge to be relatively high. Companies that do pay commission charge relatively less per hour. It can be helpful to work with a firm that pays commissions if you are looking for a firm to sell your company's offerings.
Commissions can be more motivating to TSRs than a guaranteed hourly rate.