I finally figured out how to get into that one store in hyrule and I went..

If you havent gone to kakariko village and donated the money to the goron in the store then go do that.When you donate all the money he will ask you to donate money for a new store in Castle Town. Don't donate all the money just go outside the store in kakariko village and talk to the black goron he will tell you to go see if his son is doing well.go to castle town and go out the eastern gate and youll see a goron sitting there talk to him and go back to the black goron.he will give you hot spring water take it to the goron in the eastern gate. He will go back to his store and give you a heart piece then just buy some hot spring water from him and go out the southern gate and give it to that goron come back in like 1 day and it will be done. I think thats what you do at least thats what I did. And if you havent gotten the bridge fixed just go to the desert and look for the bridge there and warp it to where the bridge is broken. Then go back to the store and it will be only 598 rupees.

Yes you have to donate 1200 or 2000 rupees to the malomart
Hope this helped

Ya I know that is a real big kicker. Too bad that is the amount you need to get to buy the armor.....







Just Kidding with you. The shop in Koriko (excuse my spelling please) will have a Goron elder out side of it after a while. Talk to him. Go into the shop and talk to the Goron elder to the right. Donate as much money as you can (You will need 1000 in all). To get more money fast wrap to the snow mountain and race the yety/snow monster guy. When you bounce off the trees try to hit them all and get the rupees that are on them. That will get you 75. Now stay left and hold "A". A ledge will come up, jump on it stay on it and you will see a red rupee. Get it. Now finish the race and make sure you win it. At the end of it he will talk some. Run up the stairs and turn into a wolf. Go back down and onto the track. You will see this big "island" thing to the left there is a ramp on it that you can climb onto. Follow it to the top. There will be a poe there, beat it and take it's soul. Go into sence mode. Dig up all the spots. Now wrap to the top of the mountain. Now race the girl. Repeat everything you did last time. Do this until your wallet is full (If you have the second wallet you should be finished collecting money). Warp to Koriko village. Finish of the first donation. Go outside the shop and talk to the Goron Elder. He will have you do a job. Do it and the next donation goes down to 200 rupees. After finishing the job go back to the shop and give the last donation. Fill your wallet up again. Now go back to the Castle Shop and buy the armor at 598 rupees. Fill up your wallet then you are able to use it.