I had the same problem with "The Hundred-Page Machine Learning Book" [1]; the default (cheaper by a few pennies) option via Amazon Prime was sold by a 3rd party

I had the same problem with "The Hundred-Page Machine Learning Book" [1]; the default (cheaper by a few pennies) option via Amazon Prime was sold by a 3rd party selling counterfeit copies. I purchased another copy from Amazon directly to compare, and you could clearly see the difference in the quality of the printing, colors, cover page. Also some pages were different, so it seems the counterfeit used an earlier draft of the 1st edition. I spoke with the author, and eventually they got the 3rd party seller suspended (at least from selling new copies), but apparently it took a couple of weeks of back-and-forth. [1] https://www.amazon.com/Hundred-Page-Machine-Learning-Book/dp/199957950X https://www.amazon.com/Hundred-Page-Machine-Learning-Book/dp...