What is 1 million Robux in USD?

I've been hearing a lot about the digital currency Robux and its increasing popularity in the gaming community. As a finance professional, I'm curious to understand the real-world value of this virtual currency. Could you please enlighten me on what exactly 1 million Robux translates to in terms of US Dollars? Is there a standard exchange rate or does it fluctuate based on market conditions? This information would help me gain a better perspective on the significance and potential value of Robux in the broader financial landscape.