It’s long been a foundation of its coverage of President Trump, and now the Washington Post is making the final report from special investigator Robert Mueller dismissing Russia collusion charges against Trump's 2016 campaign part of the bottom line.

The newspaper is set to publish the released version of the report and has priced it at $15.

“The only book with exclusive analysis by the Pulitzer Prize–winning staff of The Washington Post, and the most complete and authoritative available,” is how it’s described.

Pre-sales of the paperback expected as soon as April 30 are already selling well. On Amazon, it ranks No. 1 in “New Release in Espionage True Accounts.”

The news outlet is also promoting it with an ad in the Post’s print addition.

It is one of at least three planning to publish the report, and it is the most expensive.

Skyhorse Publishing has a $12.99 version set to be released on the same day. It’s version includes an introduction by lawyer Alan Dershowitz.

“There has never been a more important political investigation than Robert S. Mueller III's into President Donald Trump's possible collusion with Russia. His momentous findings can be found here, introduced by constitutional scholar, eminent civil libertarian, and New York Times bestselling author Alan Dershowitz,” is how their version is described.

The cheapest version comes from Melville House at $9.99. It is simply the report, minus “celebrity” analysis.

“This is the full text of special counsel Robert Mueller’s investigation into Russian interference in the 2016 presidential election. It is the report and nothing but the report, presented as released by the Attorney General of the United States, with no positioning or framing apparatus — such as a celebrity introduction — that would give it bias or impede its clarity,” said Melville House.