Went to a bar in Leslieville and they were charging $25/person. I showed up right before the fight and people were standing outside watching the screen. So we went to Boston Pizza at Lakeshore and Leslie, same thing except there was a large group of us who stood on the sidewalks and watched the patio TVs with sound. Couldn't order a beer but at least I got to watch the fight for nothing.
There was a bunch of threads on reddit about this topic.
The licensing fees were insane and were determined by the max fire code capacity of each venue. A few bar owners reported that it basically worked out to $30-40 cost per person. Some bar owners charged cover to recoup part of that loss and others just hoped each patron would spend enough to cover the loss. 200 capacity venue bar owners on reddit were reporting $10k-10k costs or something insane like that.