The value of 1 Robux in Roblox is 1 cent. That means a user can buy 100 Robux for $1. Therefore, 10,000 Robux can be purchased for $100.

Roblox is now incentivizing users to buy its in-game currency, Robux, on platforms that won’t take app store fees. You can now get up to 25 percent more Robux if you purchase the currency ...

A Roblox Premium subscription also gives you exclusive discounts and items, access to premium-only game levels, and 10% more Robux when you purchase the currency with real money.