According to one knowledgeable source, Wisconsin Gov. Scott Walker received an even larger advance than Pawlenty’s, and Bookscan has his 2013 book Unintimidated selling around 16,000 copies.
According to the report by Buzzfeed, former Minnesota Gov. Tim Pawlenty was paid a $340,000 advance for his book, so if Gov. Walker received an even larger advance than the $340,000 Pawlenty received, he made a mint for some spectacularly lackluster book sales.