@qwertyuiopasdfghjklzxcvbn Some of what you're seeing is just number shock because any given number in-currency is 1.7 times larger due to currency conversion.
A good chunk of it is that food is more expensive in Canada, due to a variety of factors including the logistics of operating food storage and distribution across a land area the size of the EU with a population the size of Poland.
Buying in bulk nullifies some of the cost increases (eg flour is about the same price per unit in UK as it is in Canada if you're used to buying a 1.5kg sack and switch instead to buying, less frequently, the 10kg sack).
Some things are simply more expensive in Canada (you'll never find a jar of jam here for 70 cents), but that's more than offset by how much cheaper other, bigger bills like housing and energy are, and how much higher wages are.