If you're looking for a store you might want to look for something IN Canada. The American dollar also has higher purchasing power right now too and you wouldn't have to pay customs. I know that this place isn't as reptile specific as some of the other places you're looking at, but I would contact the owners if there's something on the site that they don't specifically carry because if their suppliers can get it so can they. Plus if the order is over $200 there's no shipping charged.
http://www.petsandponds.com/
You can also check out this site for heat tape and a few accessories related to it:
http://www.cornelsworld.com/
I don't know how this compares to American pricing and the dollar values and all that. But at least this way Bruce doesn't get nailed with customs either. Which is annoying.
Also for some of the more basic stuff for building racks and such I think giftcards for Home Depot or better yet Rona would be pretty awesome. A lot of accessories sold for making racks online can be bought at these places for a fraction of the price.
