Our no. 1 selling Prime Day product wasn’t even on sale (and it’s sort of bizarre)

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October Prime Day is over. The annual fall sale wrapped up yesterday, and there were plenty of savings across all categories, including lowest-ever prices on Amazon devices like Kindles and Fire TVs, deals on Apple, and more. 

With more people looking to shop early for the holidays this year, I expected ZDNET’s readers to be scooping up tablets, phones, headphones, and more. And some of our readers did. The Google…