ROBLOX GAME DEVELOPMENT

Hello, I would like you to build me a Roblox Game like this SCP facility or something Like that here is the sample link - [login to view URL] I want different design with different features- So basically the atmosphere will be the same as the sample i sent to you. >The wall will be metallic with a futuristic design, >There should be a shop where players could purchase different in game items, >There should be different rank for example 0-5 council and site director just like Area 55 > it will be public Game > it will have Gps feature where players could go to different locations in the facility What are the requirements and price??