Omid Scobie's book Endgame has fallen out of the Amazon top 100 bestsellers in books, just after a week of its release.
The royal book, which was released on November 28, only sold 6,448 copies in the UK in its first week.
Endgame is currently ranked below children's books such as the Beano annual, Diary of a Wimpy Kid, and Stick Man, biographies from Britney Spears, Matthew Perry and Chris Kamara, and cookbooks from Mary Berry, Rick Stein and Tom Kerridge.
Despite the many promotional interviews Scobie gave before the book's release, it has failed to match the sales of Prince Harry's memoir Spare in January 2023.
WATCH NOW: GB News panel discuss Scobie's book falling out of Amazon top 100
The autobiography sold a whopping 467,183 copies in its first week, breaking records for the fastest-selling non-fiction book since records began in 1998.
Finding Freedom, Scobie's first royal book which was released in 2020, performed much better in sales than Endgame.
When it was released in August 2020, it sold 31,000 copies in its first week.
Some of the UK's biggest bookstores have pulled Endgame from window displays, according to reports in The Guardian.
Endgame was released in the UK on November 28HarperCollinsFor example, only one copy was put aside to order at London's best bookshop, Hatchards.
In a nearby Waterstones, a selection of copies were stacked on a table display by the entrance.
However, there was "limited interest there too", the publication claimed.
Omid Scobie has done many promotional interviews for his book
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MccGwire said: "Why would anybody buy it? It appears, not that I have read it, but it appears that everything that's in it we already know and whether it's true or not is another matter."
Malonen added: "[Scobie] shamefully tried to blame the poor translator. She was one of the best in Holland. He tried to blame the publishers.
"So people have judged the whole thing on him. And you know there's nothing new in this book, it's just a rehash of it.
"And funny enough, everything that's in the book is all Meghan's pet peeves, all the things that really annoy her. But, you know, this is a judgment of him, and it's interesting."
