This did not seem many reviews, so I decided to have a look at some other sorts of book:
- Popular history, searching on "Atkinson, Rick". An Army at Dawn had 208 reviews, The Day of Battle 175.
- Less popular history: Gordon Craig's Germany 1866-1945 has 3 reviews.
- Literary fiction, searching on "Franzen". 1,114 reviews of Freedom, 1,196 of The Corrections. On the other hand, Ann Patchett's State of Wonder has more than 3,000 reviews.
- Programming. Martin Fowler's Refactoring had 88 reviews, Kernighan and Ritchie's The C Programming Language 348.
- Poetry. Geoffrey Hill's New and Collected Poems has 3 reviews, his Selected Poems 6.
Evidently one must factor in publication date, for a book published long enough before Amazon's founding will get less traffic. The Iron Kingdom: The Rise and Fall of Prussia, 1640-1945 is for my money not nearly as readable as Craig's history, but it has 55 reviews. It might make an entertaining exercise for a snow day, to write a script to collect and correlate the information, but I don't expect there will be any snow days this season.