Make sure you’ve downloaded ROBLOX Studio, which is the development side ... Fees are paid using ROBLOX’s premium currency, Robux, which you can buy in different amounts or as a monthly ...

That's an essential action if you want to make Roblox sales. The plans come in three tiers, with each offering extra benefits: Premium 450 costs $4.99 per month and nets you 450 Robux per month ...