Our Canadian distributor is visiting us tomorrow, will discuss M5s and future models. We don't accept "not enough demand" as excuse to cherry pick only the best selling products.
For warranty, it's simple - fully covered by the seller. Bought from shop in USA? Contact them for warranty and be prepared to ship it back to USA. Same if you buy from China, Hong Kong or Malawi. Details on shipping, insurance, etc is up to the seller, so we always recommend to go with truly trusted sellers(good luck chasing AliExpress/Ebay seller after few months, maybe they don't exist anymore). Local distributor is in no way responsible to cover warranty over "grey import" units.
Canadian situation will be discussed, as stated above.
I would say about 35.428%. Also it's running completely different system, with tons of added features.