I did a full 3 week, fly in float trip to ANWR via Fairbanks. Drove from Washington to Fairbanks, my own gear, raft ect... flew w/ Wright, Hunted moose and caribou, tagged out. That one was about $12.5K with a few nights hotel, gas, everything and was gone exactly 31 days.
My last couple were float trips off a road system.... my hunting partner lives a couple hrs from Anchorage... those trips are cheap... Airfare, tags, gas and food, leave me gear at his place permanently... about $2k per trip but not a huge success rate.
It's all what you want out of the trip...