Shop signs above chests

Hello Everyone,

Warp how to do stuff isnt available yet and I need to know the proper way to make a sign above the chest so I can buy and sell stuff at my shop in my town. I would also like to know if there is a rule about selling a percentage above the buying price.

Thanks for any help you give.

Gweedo

Easy.

LINE 1: Your IG name

LINE 2: The entity of the item you are selling

LINE 3: The Buy price, then a colon : then the sell price. It should look like this

B 7:S 5

LINE 4: The Object's name, or ID.

So..

Spoiler:

Thanks so much for the info.