Not interested at this point
I'll wait and see how it pans out over time. When i checked today a four book bundle i read about in another thread wasn't available at the Canadian site - and the single volumns of the same series were each more expensive than the us counterparts.
Also, Amazon.com offered to transfer my library to .ca, and close my .com account. It didn't offer to let me keep both, so i passed.
Unless i receive a discount from kobo - i find that the us kindle books have the lowest prices.