James Dyson built a $499 toothbrush and has no idea how many he'll sell | The Pirate Street Journal

The Pirate Street Journal · Sep 22, 2026 · 33m

HERE'S WHAT WE COVERED IN THIS EPISODE:

1. Dyson skipped the market sizing slide and shipped anyway.

Dyson's Camera Jet costs $499. A camera in the brush head takes 28 pictures a second, finds the gaps between your teeth, and jets mouthwash in to floss while you brush. That is about $100 more than the best Oral-B. Only 30% of American adults floss every day. A third never do. Dyson told the Wall Street Journal he had no idea of the market size. He is 79 and owns all of an $8.3 billion company. Eddie says it sells anyway, because oral care superconsumers, the heavy buyers who own the floss…