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biotin

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A concentrated shelf (top 5 take 84% of clicks) — this niche doesn't clear our bar today.

Market size 80Growth 15Conversion 95Competition 13Returns 100Price range 41Avg price 50Brand share 34Review moat 25Quality gap 42

Returns

Incredible0.1%

return rate — above 6% kills the launch gate

Conversion

Incredible12.3%

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

Market size

Great€1.1M

€1.1M/yr · 764K searches

Avg price

Good€12.01

avg listing price — sweet spot $15–$100

Quality gap

Okay4.5★

avg incumbent rating — lower means beatable quality

Price range

Okay€4.27–€22.50

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

Brand share

Okay84%

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

Review moat

Bad4,792.5

avg incumbent reviews — the moat a new listing must climb

Growth

Bad-20.6%

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

Competition

Bad84%

top-5 click share — a locked-up shelf

Competition

The top 5 products capture 84% of clicks — a locked-up shelf that new listings rarely crack.

Brands

12 flat

Sellers

36

Top-5 brand share

84%

Open market

13%

  • natural elements33%
  • ProFuel21%
  • Vitamaze - amazing life20%
  • WeightWorld7%
  • Nature Love4%
  • Feel Natural3%
  • Open — no brand owns it (6 brands, 13%)

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%€113K20%€226K30%€340K40%€453K101001K10K100K Reviews — right = deep review moat Market share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 12 tracked products in this niche — three views at once, no toggling.

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -20.6% search growth over the last 90 days.
20K15KPrime Day '24Spike '24Holiday '24Prime Day '25Spike '25Black Friday '25SepDecMarJunAugNovMarMay

No pronounced peak months · busiest ÷ quietest = 1.3×

Reviews

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

What buyers love

Qualität insgesamt20%

“Super Produkt”

Haarwachstum9%

“Haare wachsen schneller”

Preis-Leistungs-Verhältnis9%

“Preisleistung super”

Dosierung7%

“Top Dosierung: Die 10.000 mcg Dosierung ist ideal für alle, die einen sichtbaren Effekt erzielen möchten”

Einfaches Kauen/Schlucken6%

“Gut einzunehmen”

Benutzerfreundlichkeit5%

“Problemlose Einnahme”

beworben Vs Tatsächliches Produkt4%

“Entspricht der Produktbeschreibung”

Vitamin4%

“Vitamin”

Effizienz4%

“Wirksamkeit”

Ernährungs Gehalt3%

“Gutes Nahrungsergänzungsmittel”

What buyers complain about

Geruch26%

“Stinkt”

Funktionalität insgesamt9%

“Wirkt nicht”

Allergien6%

“Hautausschlag bekommen”

Gesamtgröße5%

“Die Tabletten sind klein”

Vitamin4%

“Es ist kein leckeres Vitamin”

Nebenwirkungen4%

“Übelkeit nach Einnahme”

Preis-Leistungs-Verhältnis3%

“Schade ums Geld”

Qualität insgesamt3%

“Qualität ungenügend”

Dosierung3%

“Bei der ersten Einnahme wurde mir Speiübel”

Inhaltsstoffe – insgesamt2%

“Schädlicher Füllstoff enthalten”