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A small market ($59K/yr) — this niche doesn't clear our bar today.

Market size 15Growth 19Conversion 54Competition 38Returns 86Price range 55Avg price 81Brand share 66Review moat 29Quality gap 92

Quality gap

Great4.0★

avg incumbent rating — lower means beatable quality

Returns

Great1.5%

return rate — above 6% kills the launch gate

Avg price

Great€17.56

avg listing price — sweet spot $15–$100

Brand share

Good66%

top-5 brand share — brands hold most of the demand

Price range

Good€3.50–€29.17

cheapest to priciest tracked listing — scored on the share inside $15–$100

Conversion

Good4.5%

search→purchase rate — share of searches ending in a sale

Competition

Okay62%

top-5 click share — leaders hold, buyers still browse

Review moat

Okay3,586

avg incumbent reviews — the moat a new listing must climb

Growth

Bad-12.5%

90-day search growth — must beat 0% to launch

Market size

Bad€59K

€59K/yr · 74K searches

Competition

The top 5 products take 62% of clicks — established leaders, but buyers still shop beyond them.

Brands

18 falling

Sellers

39

Top-5 brand share

66%

Open market

29%

  • Stim-U-Dent26%
  • remos professional body care12%
  • miradent10%
  • sularpek10%
  • Wbbrbbr7%
  • DarkSwan5%

Product shelf

Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.

0%10%€6K20%€12K30%€18K40%€23K1101001K10K100K Reviews — right = deep review moat Market share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 20 tracked products in this niche — three views at once, no toggling.

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -12.5% search growth over the last 90 days.
2K2KHoliday '24Spike '25Prime Day '25SepDecMarJunAugNovMarMay

No pronounced peak months · busiest ÷ quietest = 1.5×

Reviews

What buyers praise and complain about, mined from review topics.

What buyers love

Qualität insgesamt18%

“Super produkt”

Benutzerfreundlichkeit15%

“Anwendung easy”

Zahnaufhellung13%

“Smile Teeth Whitening Powder”

Mundhygiene9%

“Absoluter Gamechanger für die Mundhygiene – handlich & kraftvoll”

beworben Vs Tatsächliches Produkt7%

“Super Produkt, tut was es soll”

Preis-Leistungs-Verhältnis6%

“Top Preis/-Leistung”

Effizienz5%

“Funktioniert”

Einfache Reinigung2%

“Ganz ok zum reinigen”

Helligkeit/Glanz/Glühen2%

“Zahnaufheller”

Akkulaufzeit2%

“Langer Akku, leichte Handhabung”

What buyers complain about

Haltbarkeit14%

“Kurze Haltbarkeit”

Funktionalität insgesamt13%

“funktioniert Null”

Mundhygiene9%

“Mundsusche”

Aufladen6%

“Schade habe ich das Ladekabel irrtümlich entsorgt”

Qualität insgesamt5%

“Müll”

Akkulaufzeit4%

“Akku Probleme”

Zahnempfindlichkeit3%

“Zahnsensitivität, bei der 3. Anwendung schmerzhafte Blitze”

Gesamtgröße3%

“Die Öffnung des Wasserbehälters ist sehr eng”

Benutzerfreundlichkeit3%

“Sehr unhandlich”

Preis-Leistungs-Verhältnis2%

“Das Geld definitiv nicht wert”

Top return reasons

Funktionalität insgesamt29%
Gesamtgröße8%
Qualität insgesamt5%
Zahnempfindlichkeit5%
Aufladen4%
Defekt Material/Teile4%
Stärke4%
Benutzerfreundlichkeit4%
beworben Vs Tatsächliches Produkt3%
Zahnaufhellung3%