London, Oct 28 Sarah Palin, the ex-governor of Alaska, was paid 1.25 million dollars to pen her memoir, official documents show.

Palin revealed the amount in a statement of her finances as Alaska governor before she tendered her resignation on July 27.

The sum was mentioned as a "retainer" received from publishers HarperCollins for her upcoming tome "Going Rogue: An American Life", reports the Telegraph.

However, the document does not say anything about the three months that she has been out of office and shows only a partial picture of the contract.

Palin is likely to make much more money as the book has already topped the popularity charts at Amazon.com and Barnes and Noble.com, much before its November 17 release.

It was earlier believed that Palin had been paid 11 million dollars for the book. (ANI)