Handled How do you sell enchanted items in Survival?

If you're talking about chest shops, you're supposed to type in a certain code on the 4th line of the sign.
Hold the enchanted item in your hand and type /iteminfo.
A code will pop up under the item.
Type the code on the 4th line of the chest shop sign.
The code should be something like (example) "J492"
If you don't understand chest shops you can go to spawn and I think there's an example.

 

Np