Lead Generation - valid, working emails (3k, 5k, 10k emails)

Have a list of 800 companies. Need 12 valid work emails (no personal emails) for specific positions from each company.

Will provide:
-Sample template (to show correct format for google/excel sheet)
-List of positions that I need work emails for within each company
-Samples of correct emails and professionals to target

Emails can be pulled off of LinkedIn, SalesNavigator, or ZoomInfo

Let me know prices for 3k emails, 5k emails, 10k emails
(Need work emails, NOT personal emails)