The book is extremely rare, highly valued, and worth a lot of money.

这本书很稀有、很珍贵，也很值钱。

youdao

After the election in 2008, it has grown to include more than Among them - a special beer brewed in his honor, various clothing articles, paintings by African artists and an extremely rare book authored by President Obama's father in 1959.

VOA: standard.2010.07.10

If only briefly, we were part of the history of this extremely rare book very early in our careers.

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And the Black Swan is a famous book about extremely rare events that most financial models cannot predict.

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