Yes! We have chest shops in Olympus. They use mana however to buy/sell items, rather than money as this is the main trading currency.
For a guide of how to set them up, click
here for a link to the thread made by Dacon. To sum it up, you want to put your IGN on the top row, the amount of items you're selling/buying on the second row, whether you're buying/selling on the third row along with the price, and on the final row the item you are selling. (There's a picture which clarifies it in the link, I'll also put it at the end of this reply).
To see the ID of an item, hold it and type
/iteminfo, whatever it says, that's what you'll add to the bottom line of the sign.
Link:
https://forums.manacube.com/threads/kilton-mana-shops-bug-fixes.37419/