This is a Job/Selling System, made by ErExx. 

This system has: Money Gui, Tween Animations for Money, Leaderstats that save (can be disabled), Gives Box tool when prompt is triggered, Sell Billboard enables, If player touches Sell part they receive money; gui updates and tween animation plays, sell billboard disables. There are a few sound effects for each action. 

Instructions to set it up are simple and explained inside of the Model!