The sales tax in canada is brutal
I'll grant that's higher than in some US states, but come over to Europe where VAT is usually 19-25%. Although at least in Europe prices are advertised including VAT, so no mental math is required to calculate how much it will end up costing.
That's a huge outlier, though. The average is 5%, and many states exempt huge swaths of goods (such as groceries) and some have no sales tax at all.
Groceries are exempt from GST/PST or HST in Canada as well.