How do I choose a CPC?

How to Determine Maximum CPC in AdWords

  1. Determine Profit Margins.
  2. Set A Cost Per Acquisition Goal.
  3. Pricing Strategies.
  4. Conversion Rates.
  5. Maximum Cost Per Click.
  6. Research Traffic.
  7. Consult First Page Estimates.
  8. Optimize Your Maximum CPC for Profit.

For More Information Please Refer: https://www.wordstream.com/blog/ws/2010/04/19/maximum-cpc-adwords