The Meret Market is a shop in MapleStory 2 where a variety of items can be purchased. The Meret Market has three sections.
The Premium section of the market has Outfit Packages, individual Outfit items, Mounts, Inventory Expansion Coupons, Emotes, Badges, and other items. You can find a detailed guide on the Premium Shop here.
The Red Meret section of the market contains items also found in the "Premium" tab. However, these items can only be purchased using Red Merets.
This section is for Outfits, Accessories, and other items that were designed by other players. You can find a more detailed guide on the Design Shop here.
If you designed your own items, you can list those designs for others to purchase your work. You can find a more detailed guide on the My Shop here.