In the normal world, there is no bomb shop, in the parallel world, there is a bomb shop where Link's home would be, there are two sets of normal bombs and a mega bomb which you must take to the pyramid to get the final Sword.
The special bomb won't appear for sale until you beat the misery mire, which is the dungeon located in the swamp. It's the sixth dungeon in the dark world.
windfall island
I haven't played it in a while, but if I remember correctly, you simply buy it at the shop in the main village.
You have to buy them in the bomb shop at Koriki (sorry for spelling) Village
i think you use a bomb flower
walk behind the bomb shop. you need to sidle. then climb the vines and crawl through a hole. then theres a cutscene. hope it helps :)
After you reunite the Blacksmiths, in the Dark World at their shop a chest will appear. Take the chest to the Sleeping Man and he will unlock it for you.
You can get it on the wii shop channel for 800 points, or if you own the game there are websites which back up roms, which are legal to download again if you own the game. i use www.doperoms.com they also provide emulators.
Well you can buy a bomb bag from a shop... I think Beedle has em. And to get a bigger one, you play that game with the whip at that unimportant place...
By "Zelda Wii" I'm assuming you mean The Legend of Zelda: Skyward Sword. The shop, or as it's called 'the Bazaar" is lcoated in the centre of Skyloft, near the Knights Academy.
Go back to Windfall Island, and sneak into the bomb shop. They will be having a conversation, and they will give the answer you need.
A Powder Keg is a weapon only available to LINK in his GORON form. In order to obtain the Powder Keg, one must go through a test by Medigoron to blow up the boulder in front of the Goron Race. After getting it, it is possible to blow up the boulder in front of Romani Ranch to get Epona. Medigoron sells them at his shop in his shop for 100 Rupees, but they are sold by a Goron in the Bomb Shop for 50. Link may only carry one at a time.http://www.clocktowntoys.ecrater.com