The Candy Merchant's Hat costs 1,000,000 candies. It multiplies by 7 the number of candies found in a quest.
It is found on the Candy Merchant's head in The Shop in The Village. The best use for this hat is for saving up candies. Very useful if you need a scythe!
"I could sell you my hat, but it is very precious, you know... You will have to give me a lot of candies for it. Let's say 1 million candies. It seems fair, right?