**disclaimer: The current exchange rate of CAD to USD is 0.997:1.000 as of this posting, so they're basically interchangeable**
Maybe it's because this is a city, and maybe it's because this is Canada, but the prices on things here are astronomically higher than things in the States, some in excess of 100% higher. I almost fainted dead away in the grocery store.
The items that I have noticed have the most price inflation over those in the U.S. are animal products. The cheapest cut of chicken (or, even a whole chicken) here is still more expensive per pound than boneless, skinless chicken breasts in the States. Butter and milk are both over twice as expensive, and cheese is getting up there. Beef is a bit more comparable, but still expensive. Same with pork. Fish isn't quite as bad either, but honestly, it makes me a bit more inclined to become a vegetarian. 2 pounds of lentils were only $2.99 after all, and still a good source of protein....
Produce is surprisingly not really more than in the States, and some things are cheaper, depending on where you go. I live in a very Bangladeshi- and Pakistani-concentrated area, so there are tiny markets with cheap produce and items like Basmati rice that I frequently eat. Bread is pretty comparable to the States, and thankfully you can get coupons for many personal care items.
For many items, such as electronics and furniture, you're hit with an automatic 13% Harmonized Sales Tax on top of them just being more expensive in Canada. I have been told by multiple sources that the only good time to buy electronics in Canada is during the Boxing Day sales (their version of Black Friday). The HST also takes effect for bills, and it makes me glad all my utilities are included with rent. It also makes me glad I moved a bunch of my furniture that I had initially regretted moving, because replacing it would have been a lot more expensive here.
Canadian Post is also more expensive. To mail a package of about 1 pound in weight to the States cost $14. Compound that with higher gas prices ($4.20 USD/gallon), higher car insurance (100% more), $2+ extra for books, and many other little fees, and yes, it is definitely more expensive to live in Canada. Luckily, if I really need something, I can get it shipped to a friend's house in the States and then go pick it up when I visit. This is a little luxury that I didn't think I'd take advantage of much, but now I am really considering it!