Black Friday 2026 is Nov 27 · See the list
INCONVENIENT MATH

Black Friday 2026 · Nov 27

The list, before the day

The rule: decide what you need before the sale starts, then check the price history, not the "was" price. These are the categories and the reading we use for it. No prices on this page, on purpose: check the current price and the 30-day low on the product page before you buy.

The three-step check

  1. Write the list in October, not on the day.
  2. Compare to the lowest price of the last 30 days, never to the crossed-out one.
  3. Pay in full. A 25% discount financed at 24% a year is roughly no discount.

The picks

Home & robots

Robot vacuum

Home category on the Black Friday shortlist. Check the 30-day price history before you buy; the video shows how.

See on Amazon
Home & robots

Home security camera

A common Black Friday category. Check whether the camera needs a paid subscription to do its basic job.

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Tech & devices

Echo and Fire TV devices

Amazon's own devices are among the most discounted items of the week. Look at the 30-day price history before you decide it's a deal.

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Tech & devices

Wireless headphones

Big range between brands and a big range in price history. Pick the model first, the sale second.

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Getting around

Electric bike

The biggest ticket on the list, and the one where having a list in October matters most.

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Sleep

Waterproof mattress protector

Protects the thing you paid a lot for, whatever the sale price was.

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Sleep

Adjustable pillow

A much cheaper comfort upgrade to try before you replace the mattress.

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Sleep

Contoured sleep mask

Costs next to nothing and does the job a lot of expensive bedroom gear promises.

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Reading list

Predictably Irrational

Dan Ariely

How anchors, decoys and "free" bend decisions. It shows up at the checkout counter and on the price tag alike.

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Reading list

Priceless: The Myth of Fair Value

William Poundstone

The book-length version of this episode: how the number next to a product shapes what it feels worth.

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Reading list

Influence

Robert Cialdini

Scarcity, social proof and the countdown clock. The toolkit behind every doorbuster.

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