How Much Data Per Month For My Telemarketer?

Hi guys...I'll be hiring a telemarketer soon to start selling Med Supps out of state and I'm wondering how many names I will need per month to give the telemarketer plenty of names to call? 5K, 10k, 20k? Assuming the telemarketer is dialing out 3 lines at a time on Salesdialer?

Note: I have tried the unlimited names for $50/mo and the quality was very questionable. Under 40% accuracy.

Thanks!

Roy

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