I’m always on the look-out for the best deals for my baking supplies. Some stuff you’ll be able to find easily at a regular grocery store, other may require a trip to a health food or whole foods store, or bulk barn. Some things you’ll only be able to find online (plus they’ll almost always be cheaper online!). For protein powders, sweeteners, and for those hard to find ingredients, I find it the easiest (and cheapest) to purchase online. Here is a list of online retailers that I use (as well options for non-canadian readers), that I have found to have the best selection, prices, and service.