During my renovation about 7 years ago I was replacing my front door and wanted a pre-hung wooden door. I shopped around in Ontario and I was amazed how expensive they were - starting at $4,500 all the way up to $9,500 and that was 7 years ago! I was talking to a guy that was doing a renovation down the street and he put me on to a door company in Seattle, WA. I called the company and ordered a mahogany 3 panel shaker door with frosted glass & matching brick mold for $2,650 USD - shipped for free anywhere in the US. I had it shipped to Buffalo and zipped across the boarder and picked it up and brought it back and paid my taxes at the boarder (no duty). All in I was under $4,000 Cdn for a door that would have cost me $5,500 - $6,500 Canadian.
I am not anti Canadian..........& I would buy Canadian all things being equal. But I definitely double check all my larger purchases before I buy to see if there are better options in the US. I am only 50min from the boarder for I can zip across and be back in no time.