https://www.wordstream.com/blog/ws/2017/07/05/online-advertising-costs
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Here’s a quick summary of our guide to online advertising costs:

• The average cost of an advertisement on Google Ads (AdWords) is $2.32 per click on the search network. The average cost per click of an ad on the Display Network is under $0.58.
• The average cost per action (CPA) in a Google advertising search campaign is $59.18.
• The most expensive keywords in Google advertising and Bing Ads cost $50 or more per click. These are generally highly competitive keywords in industries that have high customer lifetime values, like law and insurance.
• The average small business using Google advertising spends between $9,000 and $10,000 per month on their online advertising campaigns. That’s $100,000 to $120,000 per year.
• The average cost per click of an online Facebook ad is $1.72. The average cost per action on Facebook Ads is $18.68.
• The typical CPM on Facebook Ads is around $10.
• The typical CPM for an Instagram ad is closer to $5, but Instagram ad costs are rising as the platforms gains in popularity.
• Our Cost          We will deliver to your website: GUARANTEED!
  15 per day        $0.25@ = 450 visitors = $3.75/Day    
  30 per day       $0.20@ =  900 visitors = $6.00/Day
  90 per day       $0.15@ = 2700 visitors = $13.50/Day
• ​Call: Kevin 225-938-6555