Prince Harry is believed to be banking on "a record or near-record deal" to sell the movie or streaming rights to his bombshell memoir Spare.
The Duke's book reflects on a whole range of private topics including heartbreaking accounts of the death of his late mother Princess Diana, his drug use and sex during his younger partying days, fighting on the frontline in Afghanistan, his marriage to Meghan Markle and what led to the breakdown of his relationship with his family.
Spare seems to be the perfect fit for a Hollywood adaption and it was even ghost written by JD Moehlinger, whose own memoir was made into a film directed by George Clooney and starring Ben Affleck, the Scottish Daily Express reports.
It's believed that Clooney was the one who introduced Moehlinger to Prince Harry and that the Duke and Duchess of Sussex are now hopeful to secure a screen deal for Harry's story.
The royal could even hit the jackpot by insisting their own firm Archewell produces or co-produces it.
A source told the Daily Express: "Harry and Meghan are in a win-win position. He will command a top-dollar fee for the rights, while involving Archewell would mean a more lucrative 'double dip'."
The Sussexes already have a strong relationship with Netflix and the streaming giant will no doubt be looking for more royal content to bring to our screen as the sixth and final season of The Crown is currently in motion.
However, they will struggle to beat the largest single book deal in Hollywood history which was the $6m (£4.8m) paid for Dan Brown's worldwide-hit novel, The Da Vinci Code in 2003.
All in, the biggest known payday was the $10m (£8m) Marvel Comics were given from Sony in 1999 for the rights to the entire Spiderman back catalogue.
Other huge deals include $5m (£4m) for El James for her hit trilogy Fifty Shades of Grey in 2012 and $2m (£1.6m) to J.K. Rowling for her first four Harry Potter books in 1998.
The Express source said: "Nobody in these tough times is throwing money around like that. But given the success of Spare and Harry's cachet, he can count on a record or near-record deal."
However, even these record sums can be cut short by box-office takings if a film becomes even a hit in cinemas worldwide.
Edinburgh-based Harry potter novelist Rowling is one author who might now wish she had held out for more given that the first four films in her Harry Potter franchise grossed $3.5b which is 1750 times her original deal.
Fifty shades on the screen brought in over $1.l3b while Da Vanci grossed $700m. Other hit authors have been dealt even poorer cards after Peter Benchley solid the movie rights to his novel Jaws for $175k in 1973 and the film went on to make $470m at the box office.
Similarly, Ian Fleming sold the movie rights to his best selling James Bond Novels for $50,000 in 1861 and the franchise has a made an estimated $7bn.
However, possibly the worst deal of all time is the $130 that was given to DC comics cartoonists Joe Shutter and Jerry Siegel in 1938 which seemed like a lot of money at the time.
Prince Harry and Meghan may want to go down a similar avenue as they reportedly plan to sell the movie rights to Stream but they better make sure they secure the best possible deal for it first.
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