2.0: The Revival
An update is here, after months and even years..

+ Added READ-ME.

> Updated the script to 1.17.1, older versions may not be supported.
> Fixed the update checker, now it actually checks.
> Moved operations from chat messages to actionbars.

- Removed close GUI button.
- Removed item lores temporarily.
- Removed TuSKe, now the system uses skript-gui.

This update brings:

+ Added tips to yml files.
+ Added sign support.

~ Fixed update control error.

Sorry for long wait, I'm out of ideas tbh.

This update brings:

+ Added reload option to GUI.
+ Added reload option node to items.yml.

~ Changed "us.admin" perm to "ultrashop.admin"

- Removed skRayFall add-on requirement.
- Removed command arguments.
- Removed shiny option for faster use and require less add-on.
- Removed multi language support for faster use.
- Removed config file and moved config nodes to messages.yml

Added script file to .zip.

This update brings:

+ Selling feature.
+ More detailed yaml files.
+ New placeholders in lore in items.yml.

~ Now, you buy with left click and sell with right click.

* You may not sell some items if they got special name unless the ones in shop.

This update brings:

+ Added lore infos to language files.

~ Changed all perms to "us.admin"
~ Changed message format for purchasing.
~ Changed default lore for items in items.yml.
~ Fixed missing config.yml
~ *Fixed language check on first load
~ Fixed language issue on "us lang" command.

- Removed file checking as everything included in .zip file.
- Removed "no-money" node from language files.

* If you reload the script after putting the Folder to "/plugins", you shall not have any problems.

This update brings:

~ Updated YAML files from 1.5 to 1.6.

I recommend you to update this version and delete your entire yaml files ASAP.

This update brings:

+ Added help message returning to lang command.
+ Added auto fill option for each gui (may toggle in items.yml).
+ Added close button to main menu.

~ Changed help command entirely.
~ Changed shiny option to false in default items.yml so you won't face with no item display after first load if you don't use skRayFall.
~ Moved "back" node from "shop" to "advanced".

- Nothing removed.

This update brings:

+ Added config.
+ Added shiny option. (requires skRayFall)
+ Added back button for each GUI. (Auto added to last slot of GUI.)
+ Added update control. (may toggle via config)

- Removed amount & name from item lores in categories.
- Removed downloading option as it reduces performance.

~ Made default item lore better.

I recommend you to get a backup of your yml files and install new ones so that you won't get any errors.

Also, if you don't use skRayFall, you can easily change shiny option in items.yml to false. You will get error each time you refresh the skript but you won't have problems on GUIs.

This update brings:

This update brings:

+ Added downloading option for files from Github on first load or file missing.
+ Added messages.yml file.
+ Added placeholder support for messages.

~ Improved performance like really a lot!