get the brass shipped to a broker (freight forwarder) in sk i use Percy H davis. the brass gets to their USA address then goes through the process of customs, duty etc. then it gets purolator shipped to my door. thats how i got all my 30 remington brass from bufalo arms. i talked to Customs on both sides of the border and my broker and this is fully legal. my broker i think charged me 30 bucks to do all the paperwork, duty, and ship to my door. that was for 100 cases. so its not too bad. and that way you only have to pay bufalo to ship within the USA. hope this helps
MAKE SURE YOU GET THE SENDER TO WRIGHT MADE IN U.S.A ON THE BOX OR BILL. unless they are made elsewhere of course. also make sure there is a invoice in a packing slip or something saying what you payed. A nafta form is best but a hand written country of origin works. also if you do decide to try this. my broker will only accept Fed Ex and USPS packages so make sure you clarify how to ship to them.
and the 250-300 fee they are talking about i believe is because they dont have the proper license to export and have to get some kind of permit to do so. at least thats what the woman at US customs told me, but then again. not too sure.