The Republican National Committee (RNC) reportedly purchased nearly $100,000 worth of copies of the book "Triggered" by President Trump's son Donald Trump Jr.

Federal Election Commission (FEC) filings show that on Oct. 29, the RNC paid $94,800 to Booksamillion.com for "donor mementos."

BuzzFeed News reported that the same day as the purchase, Trump Jr. signed an RNC fundraising email that said people who donate $50 or more to the party would get signed copies of the book.

An RNC official told The Hill in an email that the party had been purchasing the book to keep up with demand and that it brought in $500,000 by fundraising off of the book.

The official also noted that both parties often use books for fundraising.

A New York Times journalist first reported on the FEC filing.

An RNC official told BuzzFeed News this month that there wasn't "a large bulk purchase,” but that it was “ordering copies to keep up with demand.”

“Using books as a means to fundraise is standard practice from political parties on both sides of the aisle,” the unidentified person said. “Triggered has been very popular among our supporters, helping us raise funds to support the reelection effort.”

The book was released on Nov. 5. It is at the top of the New York Times best seller list for hardcover nonfiction. The list indicates that some retailers have reported receiving bulk orders of it.