Calvin Coolidge Autobiography - is it worth anything?

Recently, I picked up, ( in all places, a charity bookstall in Wales),
a copy of ‘The Autobiography of Calvin Coolidge’, published in 1929, by the Cosmopolitan Book Corporation, New York.
It is in good condition, some ‘foxing’ of the pages, complete with photos, but no dust cover.
Out of pure interest, can anyone tell me if it has any market value, and whether it is scarce.

Did any other Presidents write their own autobiographies?

More presidents have memoirs than autobiographies. My library has two copies of the 1929 edition. I imagine it had a fairly big print run.

Grant wrote his own memoirs. He might have been the first president to make money off of them (posthumously however).