Storing an item in a locker doubles it's base price. If you find this out by storing a subdungeon bonus item (especially one that has a base price of 100) then you are in for some sticker shock. Honestly, I don't know how I feel about this. It's a lot more reasonable to pay 32 to bring out a mana pendant when I'm playing a wizard or sorcerer.
You can't cut back on kingdom funding. You will regret this!