I don't think I've bought anything from SRG before. Do they charge shipping? To Canada?
Also preorder means unlimited, and I can easily get a standard copy without the checkout rush?
They charge shipping, and last time I ordered to Canada from them (Shadow Warrior 2) I got dinged with customs so be mindful of that.
If it's anything like their other releases LimitedRunGames should have a more basic version available if that's easier.