$1.50/gb overage fees for home internet on Rogers in Canada. I have a 300gb plan with a different provider so it normally isn't an issue, but I'm staying with family right now, and their 75gb can get eaten up quickly.
I count 5 iOS devices here, so a 1.5gb OS upgrade will pull 7.5gb here. I've been purposefully avoiding updating apps on my phone while I've been here, and app updates would average several gb every week as well.
Don't even start on mobile here. I was lucky enough to get a 6gb promo plan a few years back, but the average plan now starts at 500mb and can easily run for $80. things actually seem to be regressing here.