Shopah

SHOPAH!

SHOPAH?!

Attach a sign to a barrel or chest

Write "[trade]" or "[trade]" and click done

The sign will ask for stuff

Interact with a stack of any number of items to sell

And the price

Same thing

And... don't get nervous!

You have a shop. An out of stock shop.

Get your stuff in the barrel! Quick! - or slow if you want...

And profit!

When people pay, the item you want will occupy the same chest. You can put more stuff there too... if you're messy.