All the money I ever spend is on arrows, which is kind of annoying, but still I'm fine with it
It's good for the crafters and the economy, and I also think it's fair.
Yes, BLM can cast without consuming any ammo, but BLM also runs out of MP very fast.
Once their MP are gone, they are totally helpless and useless.
Archers on the other hand can just keep on shooting unless they forgot to bring enough arrows to a fight..which should never happen