clearI got a pair in the last drop but sent to address in States and brought over personally. From past experience, you will definitely have GST/PST and sometimes an additional "handling fee" of no more than$10. However, when you do get dinged more it's not pleasant. If you are in Vancouver area, I'm thinking of selling. They sound awesome but, being my first decent full size closed back headphones, I belatedly discovered I prefer in ear or on ear.
tulboxThanks for the offer but I'm unfortunately near Toronto :(. Thanks for answer about the tax/customs though, I'll take that into careful consideration.
clearThey were about $184 in total CAD at the end of the day with shipping (no duty on my package), and the terrible exchange rate. These sound awesome after break-in. A little harsh on the high end initially, but it breaks in. Very detailed and large soundstage. Happy with the purchase.
clearI don't know how the isolation is on the m50x, but the AKG k553 act more like semi-open headphones. They leak enough sound that you can't listen to music while your significant other is trying to fall asleep next to you. They don't leak nearly as much sound as open headphones like my previous Sennheiser HD555s. Hopefully this helps.