I'm glad to know the company is so good to do business with; thanks! It looks like they are what REI should be. (As much as I like REI, I find their prices are generally high.)

Possegal, I'm in the US. MEC is in Canada, and would be shipping things from Canada to the US.

Grog:
You'd have to check with the revenue agency. You can also take a chance and experiment. It probably is not a fortune...
I haven't found anything online, though I've looked. (Obviously I'm not using the right search terms; surely such information is online somewhere!)

It's probably not a fortune, but if the duty increases the total cost of the transaction to make it more expensive than buying from Amazon, I'll buy from Amazon.

MEC has soooo many things that look good! I have to stop myself from browsing their website -- too many temptations!