Use a Player Chest Shop

Please note: that when we reference funds and purchases in regards to Player Chest Shops, this refers to the in-game currency. You cannot use real currency to obtain in-game currency.
Make sure you have sufficient funds before making purchases. To check, use the /bal or /balance commands to check your balance.
To use a Player's Chest Shop, simply go up to their chest item and there are 2 actions of the following:
Click
Action
Left Click
Will buy an item for the amount specified.
Right Click
Will sell an item for the amount specified.