Last week, I lost it over a hangnail and a two-dollar bottle of hydrogen peroxide.

You know when a hangnail gets angry, and a tiny red ball of pain settles in for a party on the side of your finger? Well, yeah. That was me. My usual solution is to stick said finger into a bottle of peroxide for a good long soak. But we were out of the stuff, so, as has become my habit, I turned to Amazon. And that’s when things not only got weird, they got manipulative. Sure, I’ve been ambiently aware of Amazon’s algorithmic pricing and merchandising practices, but last night, the raw power of the company’s control over my routine purchases was on full display.

There’s literally no company in the world with better data about online purchasing than Amazon. So studying how and where it lures a shopper through a purchase process is a worthy exercise. This particular one left a terrible taste in my mouth — one I don’t think I’ll ever shake.

First the detail. Take a look at my search results for “Hydrogen Peroxide” on Amazon. I’ve annotated them with red text and arrows:

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