There is Town A and Town B.
Town A is situated a Real-Life 40 minute trip by foot from Town B.
You are in Town A.
In Town B a person who has raided an old military base finds a large collection of (Insert weapon) Ammunition. They sell it to a shop in Town B.
In Town A you have a standard ammunition amounts in a shop there.
Because of the excessive amount of ammunition in Town B, it is cheaper there. (20 bullets = 15 caps in Town A, 20 bullets = 7 caps in Town B currently.)
So this motivates players to take long trips across the wasteland or do difficult tasks to gain access or buy fuel to drive a car etc, to get to Town B instead of Town A. This makes the game longer, it promotes exploration and adventuring and keeping equipment in good condition, making people spend more time on it.
Discuss.