Even for those who try to do the North in a few weeks or a month there are some fixed costs. Transportation costs won't vary much. The big part is getting there & coming back. Those with time don't ad...
We went to Ak last year. Our freinds that went with us kept track of cost more so than us. 9 weeks, 9k mi and $9000. The three matched up. I am pretty sure we spent more than that.