When word broke early last week that former president and first lady Barack and Michelle Obama had landed a joint deal at Penguin Random House worth a reported $65 million, many in the industry were stunned. The advance is, if not the largest on record for two standalone works, certainly the largest in recent memory.
https://www.publishersweekly.com/pw/by-topic/industry-news/book-deals/article/72949-the-obamas-book-deals-spark-65-million-mystery.html
big mike should be worried about this one, too