Roblox Premium is a subscription-based model that is more cost-efficient than buying Robux outright. For example, if one buys Robux directly, then a $4.99 purchase will get you 400 Robux.

Creating unique products and game passes is one way to obtain free Robux. A wonderful place to start is the Roblox Marketplace, where you can manufacture and sell virtual goods like hats, shirts ...