The $7/Head Toothbrush Replacement Racket
“I pay $7 per toothbrush head because Oral-B has me locked in. The generics at $2.50 each are probably fine. This is the printer ink of dental care.”
Oral-B iO Ultimate Clean Replacement Brush Heads (5 Count)
45,678 reviews
Pros
- +Fits the Oral-B iO series perfectly
- +Micro-vibration bristles actually clean better
- +One sensitive head included (nice touch)
- +4.7 stars with 45k reviews — they work
Cons
- -$7 per brush head is printer-ink-level pricing
- -Oral-B has you locked into their ecosystem
- -You'll replace them every 3 months forever
Compatible iO Replacement Heads (8-Pack, Generic)
12,345 reviews
Pros
- +8 heads for $20 = $2.50 each vs $7 each
- +Same basic bristle design
- +65% cheaper per head
- +You can replace them more often guilt-free
Cons
- -Slightly lower build quality
- -Might not fit as snugly
- -Your dentist won't know the difference but you will
The Story
The Oral-B iO is a great electric toothbrush. I'm not disputing that. But the replacement heads are $7 each. Seven dollars. For a tiny plastic thing with bristles that you throw away every 3 months.
This is the razor blade business model applied to dental hygiene. You buy the handle once, then pay the Oral-B tax every quarter for the rest of your life. Generic replacement heads exist on Amazon for $2.50 each and have decent reviews. Are they as good? Probably 85% as good. Is 85% as good enough for your teeth? Your dentist says replace every 3 months regardless.
I buy the real Oral-B heads because I'm the kind of person who'll bet his net worth on Fannie Mae preferred stock but won't gamble on generic toothbrush heads. Make it make sense. I cannot.
The Lesson
Oral-B replacement heads are the printer ink of dental care. The generics are probably fine but I'll never switch because I'm irrationally loyal to a toothbrush brand.
Affiliate Disclosure: Links on this page go to Amazon and include an affiliate tag. If you buy something, I earn a small commission at no extra cost to you. This is an honest comparison of products I've actually used. Product details, prices, ratings, and review counts are approximate and may be outdated. This page was created with AI assistance. Not professional product advice — just one guy's experience.
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Glen's Musings — AI, investing, and building things. Occasional. Free.
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