I also would rather not have a system where you weapon eventually becomes useless.Durability is fine as long as you can repair your weapons when you like with a financial cost

Sometimes there's camp repair events, which I think increases the durability of weapons. I've had it for a few nights in a week.

I think it makes the economy more interesting here, but the balance is a bit off for some weapons, especially those with low usage (ie. throwing weapons have 6 shots but cost as much as melee).