Been to the Richmond place a few times. Had a 18-200 lens that took them ~6 months to replace under warranty - delivery to retailers took precedence over delivery to warranty service (if warranty you have already paid...), ended up loosing patience and eventually received the replacement lens - they did provide a loaner lens for a period of time which was decent of them (between me loosing patience and waiting for the next lens shipment).
My Nikon gear is all Canadian - between DSLR, 3x 2.8 lenses, 2x DX lenses, flash, 3x monarch scopes, range finder, binos, spotting scope... had hoped to receive better service on a part that cost <$1 to manufacture and <$2 to ship out (will fit in standard envelope, not even parcel cost). Worthy of a "customer service fail" poster
Ended up taking a mini butane torch and fusing the ends back together. Am extremely gentle on my gear so am not actually worried about scratching the ocular lenses or it breaking again, just principle of the matter.
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For the price difference between Canada and the US, may be worthwhile to buy in US, take your chances, if need warranty service and have to pay for shipping still less than price difference. US export restriction on some items an other issue though. Given the amount of Nikon gear I've been through over 20 or so years, 1 issue with new to market lens and 1 issue with plastic cover am fairly confident in the quality of their gear.