I was thinking the same thing, although I am intrigued to see that they are posting on their site that they are approved for cooking use. Not something you'd publicize openly if not fairly safe.
As for 45 bucks, plus tax, for a 40 pound bag, that is the cheapest option for cooking pellets in Canada (at least based on what I can find and I have looked a fair bit). I can buy 20 pounds for 23-25 bucks and up if I go smaller. Hence my hopes of finding a cheaper alternative.
Below is what I am using right now due to cost and availability (also very well reviewed too).
www.amazon.ca/Cookinpellets-Perfect-Smoking-Pellets-40-Pounds/dp/B00819OICI
EDIT: Found a 40 pound bag of the "pit boss competition blend" for 40 bucks online at homedepot and costco.ca[/
Do you not have a Canadian Tire, Home Depot or Walmart close by?
Pellet Grill Fuel, like Pit Boss Pellets are typically $15-$20 per 40# bag