Happy Mask Shop

Ocarina of Time
The Happy Mask Shop makes its first appearance in Ocarina of Time and is located in Hyrule Castle Town during young Link's time. It is the basis for the Mask Trading Sidequest, but it will only open after the guard in Kakariko Village receives Zelda's Letter. It is owned by the Happy Mask Salesman.

The way in which the Happy Mask Shop functions is different than a shop normally works. Instead of selling the masks, the Happy Mask Shop hires people to become "happiness salesmen." The store loans the mask to its customers so that they can sell it to other people. The customer must then pay back the money to the Happy Mask Salesman, who will in return lend the customer a newer model to sell. The client can borrow masks that they have already sold, but one model of each mask can only be sold once. Completing the process of selling the masks to other people is supposed to grant happiness not only to the customer, but to everyone else as well.

At first, the Happy Mask Shop only has one mask in stock: the Keaton Mask. If Link manages to complete the Mask Trading Sidequest and sell all of the first four masks, the Happy Mask Salesman will reward the young hero with the Mask of Truth, which grants Link the ability to speak to Gossip Stones. Moreover, the salesman will put up three new mask models, all of which are not up for sale and that only Link can borrow.

Masks for Sale
 * Keaton Mask
 * Skull Mask
 * Spooky Mask
 * Bunny Hood

Masks Not for Sale
 * Mask of Truth
 * Gerudo Mask
 * Goron Mask
 * Zora Mask

After Link withdraws the Master Sword from its pedestal, the Happy Mask Shop will be completely destroyed and abandoned, just like the rest of Castle Town.

Oracle of Ages
A smaller version of the Happy Mask Shop is situated in Lynna Town in Oracle of Ages. However, masks are unable to be purchased at this particular location. The only obtainable mask is a temporarily held item for use in the trading sequence.