The results reported by Chobani and Taco Bell are in line with metrics Facebook disclosed from Ben & Jerry's and Levi's last December. ...Neither the brands nor Instagram disclosed the spending by the campaigns, an important factor for advertisers considering the platform. The ads are sold on a CPM basis, meaning advertisers pay a fee based on every 1,000 people reached. Salesforce has estimated the average price of an app-install ad on Facebook at $5.68. Assuming a CPM in the range, both campaigns cost in the tens of thousands of dollars....
Via Jeff Domansky
This is recommended reading for marketing and content marketing pros. Take note of the excellent advice from the marketing director for Chobani.