I usually buy my commercial plane ticket some time during winter...$1,000 to Fairbanks. This year I just bought my AK hunting license, moose and wolf tags online and had them mailed to me...about $500. I've already purchased my freeze-dried meals and replenishable supplies. The Super Cub flight is a lock (every year) and I figure about $2,500 for it. I'd pay that in advance if possible, but our pilot/friend always has us wait until after the trip is over to settle up. The additional costs are for satellite phone, hotels, meals, tips, car rental, and (if I kill) costs to manage the meat and trophy. If I wanted to really push it hard, I could possibly come in under $5k...barely. Since I've learned to 1) be safe and 2) avoid tight itineraries, I'm willing to spend the extra money for a better trip.
If I ever float an Alaska river, I doubt if I'll be moose hunting. Seems like a fantastically good way to have an adventure, but not great odds for the bowhunter...at least the diy bowhunter. Rivers are the lowest point in the terrain, and you're often below banks and unaware of what might be 1/4 mile back in the spruce. Water noise impedes your ability to hear a faint moose grunt or antler rake. I would only float if it were how I accessed my ONE hunting spot, and then float out to be picked up.
I'd rather eat over-cooked peas than hunt the haul road from what I hear. Both tend to leave a bad taste. The road systems are b-u-s-y with hunters in-season, and I've witnessed it. Pickups, campers, tents, trailers, atvs are everywhere you drive. The good hunting has been found and exploited. The answer is found in the wilderness or places only a small plane can access. Otherwise, you'll be competing with other hunters...no way around it.