The current exchange rate from Robux to USD is US$0.0035 cents per 1 Robux, and the amount of Robux able to be purchased per one USD cent is set at a base rate of 0.8. thus, How many Robux is $40? Most gamers are eager to know How Much Is 40 Dollars Worth Of Robux. … Continue reading How much Robux do you get for $1?