Using 3 heavy throwing axes = 15k upkeep for 12 ammo weapon (that can double as a 1hander)
Using 1 good 1h weapon = 5-10k
Using 1 good 2h weapon = 7.5k-15k
Add in a shield (which 2h don't use), and throwing axes (or any throwing weapon) are horribly inefficient for their upkeep cost. I can at most get 3 kills with 12 throwing axes, and that's if my 150 throwing skill is enough to land the axes where I want (which is not often).
Suggestion:
Increase ammo per throwing axe (and other throwing weapons)
OR
Add diminishing returns on upkeep for throwing weapons (1x throwing weapon = 100% cost (5k), 2x of same throwing weapon = 50% cost of second throwing weapon (so the total repair worth for 2 slots of heavy throwing axes are equal to 7.5k), 3x of same throwing weapon = 25% cost of third throwing weapon (so the total worth of 3 throwing weapons is 8.75k)) this method is a little convoluted but I think would be best, as it would reward "pure" users of throwing weapons (like me) and not make them so expensive to maintain
Because as it stands, I'm stuck using 3x Francisca + a shield because that's all I can afford, unless I get a really lucky 5x streak. I'm considering switching over to just using a decent 2h weapon - because that kind of play is being hugely rewarded with the cheapest repair costs.