When you have donated 1000 rupees to the Kakariko Village branch of Malo Mart you still have to donate another 2000 right? Wrong! There's a Goron Elder outside the door of Malo Mart and he will give you the task of running across Hyrule Field with a rather flimsy barrel of hot, refreshing spring water. If you reach the Castle Town bridge, you will see a Goron sitting there. Fling the barrel at him and he will be rejeuvinated. Sounds easy right? Well if you can dodge all of the keese and levers which try to kill you, no problem. Here's a tip: the levers will swarm around you but they wont actually attack you (most of the time!) so try to just run straight for the bridge and you should outrun the keese and the levers will disappear before you reach the bridge. So what's the point of this unusual escapade? Well, when you return from this mission, the price will have dropped from 2000 to 200! Hope this helps!