[Retric]

> Or it could be from a user who previously owned a lifetime Builder's Club subscription, which is now grandfathered in to Roblox Premium, and receives Robux monthly despite only making a one-time payment.

> My point here is to demonstrate that attempting to create such a fiat -> Robux exchange rate figure isn't really feasible, or that if one did exist it wouldn't be accurate. Nor would I think it to be particularly useful either; the main exchange rate that matters to developers is the Robux -> fiat one (for how much Robux is going into their experiences and how much they can DevEx from it), which is very clear and very well-defined – since September 2025, it's 0.0038 USD per Robux <https://create.roblox.com/dashboard/devex>.

If there is not some USD -> Robux calculation then there’s no way to say what percentage payout 0.0038 USD per Robux represents.

Ultimately the company can create Robux from thin air, what matters is the total amount created year vs the total money coming into the system each year. IE company could give every player some free Robux it’s just adding 0$ USD -> X Robux to the average.

Which is why the statement about treating some exchanges differently is so sketchy in terms of calculating what percentage a developer keeps.