This is a great question and there are several factors that influence the bidding price. Those factors could include: competitive keywords, industry, demand, etc.

Across all industries in the U.S., the average costs and conversion rate are (according to WordSream):

  • 6.11% Click Through Rate (CTR) – The number of clicks divided by impressions.
  • $4.22 Cost Per Click (CPC) – The amount you pay for each click on your ad.
  • $53.52 Cost Per Lead (CPL) – The amount of ad spend divided by converted leads.