I will speak as an economist, because I am one.
We have to distinguish between periods. I'd say that there was one period, probably from 2012 to 2020, when the retail cost of dairy products didn't go up, but input costs did go up during that time.
Over the last two years, with high inflation, the situation was different. There were increases, and Statistics Canada's data show it. Bulk costs also went up; Statistics Canada collects data on that.
As for the selling price dairy processors are asking of their clients, there were increases, but they reflect increased costs observed over the last two years. However, if we look at the previous period, I'd say that the situation was very different.