I had to pay $30 US for an I-94 when I was crossing the CBX for a five day Thanksgiving visit to family, contrary to what everybody says so expect to be surprised.
https://waggonerguide.com/canadians-face-stricter-u-s-border-crossings/
Take a look at this article! https://www.theepochtimes.com/world/does-canada-have-an-exit-tax-6053227
Take a look at this article! https://www.theepochtimes.com/opinion/accepting-mediocrity-has-become-a-canadian-habit-6054204