Seller

The seller NPC also known as market NPC is an NPC that provides a service where you can buy or sell items. He/she will hold your items for a certain amount of time and sell them for you by charging a percent tax/fee for just leaving the item in charge of them.

For more detail information on how this NPC's interacts see the Market. Not to be confused with players merchant mode.

Locations
In addition, there is a shield smith market accepting shields at Pandala Village (26,-35).