### Clue: Like a billionaires' club member, author reportedly has already joined? (7,2,2)
### Answer: ROLLING IN IT 
 ### Explanation: Definition: Like a billionaires' club member
 **Homophone of**(… reportedly) "Rowling"(J.K., British author of Harry Potter fame) + [IN IT](has already joined/is already a member of, in this case, the aforementioned club).
Answer: …, "it" being money.