Let's say that you are a Non-resident Alien, yes that is what an US hunter is classified as.
You will have to go with an Outfitter up there, buy your tag/tags and transportation up and back to USA. Processing of game, border fees for rifle etc.
A conservative estimate would be 5K. I might be wrong but it will give you an idea of what you will be spending.
There is a Magazine on the market, look in your local book store for BC Hunter or Big Game Hunter. Just check where it is published and that is the one to buy and read through it and then check with some of the Outfitters that advertise in the mag.
Good luck.
Brian