The road building in Death Stranding is broken when it comes to material costs. It looks like it's supposed to increase as you progress through the story and map however it looks like they originally intended for the progress to go differently than in the final release and forgot to reflect that in the roads.
The road to the Craftsman gradually becomes more expensive. The Craftsman is also the only junction in the game. Then the story points you to South Knot City and the road prices jump significantly. Then the story points you to Mountain Knot City with a stop at Distribution Center North of Mountain Knot City. The road from the Craftsman to the Distribution Center North of Mountain Knot City becomes cheap again, only slightly more expensive than the road to him, but then you get punched in the gut when you see the cost of the road to Mountain Knot City from the Distribution Center. It's like 3-4 times more expensive than the road to the Distribution Center, but only slightly more expensive than the road to South Knot City.
@dyske
I haven't tried those yet. Maybe I should.
yeah I built some Lake city with south, but when I got zip lines I kinda stopped. Since I handled most of the standard deliveries with them.