Not everyone has extra money to spend on anything. For some people it is just a way of life trying to cut every possible corner they can. When you're like me and living off of around 20 grand a year raising a family of 5 and putting my oldest daughter through College, every last penny saved is as small victory.
I agree if I was watching my pocket book and I had the patience for dealing with the china vendors then I would save money over the long term. In my case I have no kids, no alimony and I own everything out right with zero debt so screw it I going to get from the canuck . Of course not every Canada vendor is like Jack at HappyVaper. I have had issues with shipping taking weeks, items not in stock leaky bottles and prices much higher than I think they should be from various vendors. I could see where some people would be more inclined to get direct from China because not everything is golden on this side of the Canadian border. It comes down to whatever your own personal comfort level is. But if asked I would still recommend Canadian companies I have been happy with over the ones in China.