Pre-launch statistics suggested 53% of users viewed more than half of Canvas, with an average view time of 31 seconds. These numbers only measure users who tapped an ad to initiate the Canvas experience.
Canvas will compete directly with other ad placements on Facebook and, eventually, within its Audience Network. From the standpoint of pricing and auction mechanics, it's no different from any other news feed ad.
“All of the objectives and delivery that already work for ads on Facebook will continue to work here. It’s supported for clicks, conversions, ad reach and frequency,” said Facebook product manager Zach Hendlin. “Advertisers pay nothing more than they already do to create an ad on Facebook.”