According to Celebrity Net Worth, John Mayer is worth $70 million, which they attribute in part to his music's commercial success. With a total of seven Grammys, he's undoubtedly enjoyed a successful career in music, so it's unsurprising to see his net worth being so high. 

One of Mayer's interests is watches (via The New York Times). He values his collection as being worth tens of millions of dollars — someone who can afford so many expensive watches must live a rather comfortable lifestyle, and as we can see, Mayer is no exception.

His most recent album, "The Search for Everything", was released in 2017 to a decent reception (via Billboard), and Mayer has confirmed that his next album is finished — though there's no set release date (via Live For Live Music). Turning 44 years old this year, there's still plenty of time for Mayer to add to his wealth, particularly if the forthcoming album is a commercial success.