Those deeply involved in Roblox often purchase a Robox Premium (previously called Builders Club) subscription. There are a few different plans to choose from here based on the amount of Robux you get, ...

Roblox Premium gives monthly Robux, trading privileges, and access to exclusive items and discounts not available to free users. There are three Roblox Premium tiers in the US: Premium 450 ($4.99), ...