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51

iso whey

Worth a look

Shows low returns (0.1%), but brand-locked demand (top 5 brands take 95% of clicks) keeps it on the watch list.

Market size 45Growth 53Conversion 26Competition 51Returns 99Price range 62Avg price 88Brand share 14Review moat 25Quality gap 57

Returns

Incredible0.1%

return rate — above 5% kills the launch gate

Avg price

Great€65.16

avg listing price — sweet spot $15–$100

Price range

Good€36.20–€139.81

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

Quality gap

Good4.4★

avg incumbent rating — lower means beatable quality

Growth

Good+24.1%

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

Competition

Good55%

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

Market size

Okay€242K

€242K/yr · 180K searches

Conversion

Okay2.1%

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

Review moat

Bad4,509.45

avg incumbent reviews — the moat a new listing must climb

Brand share

Bad95%

top-5 brand share — brand-locked demand

According to Flapen's Amazon Germany niche tracking, iso whey is a €242K/yr Amazon Germany market (180K searches/yr). The top 5 brands hold 95% of demand. Verdict: Worth a look — 51/100.

Data updated Jul 11, 2026 · scored weekly · How we score niches

iso whey market data

Units sold / yr
3K–4K
avg 100–250/product
Revenue / yr
€195K–€261K
units × avg price
Conversion rate
2.1%
Avg BSR
#71
Page quality
0%
Prime
82%
Sponsored
64%
Out of stock
11.4%
Avg brand age
81 months
Avg seller age
181 days

Competition & brand share

The top 5 products take 55% of clicks — established leaders, but buyers still shop beyond them.

Brands

7 falling

Sellers

38

Top-5 brand share

95%

Top 20: 100%

Top-5 click share

55%

Top 20: 97%

Open market

3%

  • ESN68%
  • Optimum Nutrition11%
  • BioTechUSA8%
  • Black Hammer Nutrition5%
  • Body Power4%
  • Scitec Nutrition3%
  • Open — no brand owns it (1 brand, 3%)

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — +24.1% search growth over the last 90 days.
10K6KPrime Day '24Spike '24Holiday '24Spike '25Prime Day '25Black Friday '25Spike '26SepDecMarJunAugNovMarMay

No pronounced peak months · busiest ÷ quietest = 1.7×

Top iso whey search terms

  • iso whey38K/yr
  • whey protein 5kg29K/yr
  • esn whey isolate16K/yr
  • esn iso whey16K/yr
  • esn isolate protein8K/yr
  • protein pulver 5kg14K/yr
  • esn iso whey protein3K/yr
  • esn whey protein isolate5K/yr
  • esn isolate6K/yr
  • why isolate protein3K/yr
All search terms

Top iso whey products on Amazon

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

0%10%€24K20%€48K30%€72K40%€97K1101001K10K100K Reviews — right = deep review moat Market share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 22 tracked products in this niche — three views at once, no toggling.

What buyers say about iso whey

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

What buyers love

Geschmack insgesamt26%

“schmeckt super”

Ernährungs Gehalt15%

“Beste protein für mich”

Geschmack13%

“Mega Geschmack”

Qualität insgesamt12%

“Top Quality”

Löslichkeit8%

“Super Löslichkeit, Super Lecker”

Süße4%

“Bisschen süß”

Preis-Leistungs-Verhältnis3%

“Preis-Leistung super”

Frische1%

“Das Produkt ist sehr frisch und sehr lecker”

Linderung von Muskelschmerzen1%

“Auch von der Wirkung her passt alles – unterstützt den Muskelaufbau”

Reguliert die Verdauung1%

“Gute Löslichkeit tolle Verträglichkeit”

What buyers complain about

Preis-Leistungs-Verhältnis17%

“Sparmaßnahme inakzeptabel”

Geschmack insgesamt15%

“Ungenießbar. Schmeckt ekelhaft”

Süße10%

“Mir persönlich zu süß”

Geschmack9%

“Geschmackliche Vollkatastrophe”

Ernährungs Gehalt4%

“Die Qualität der Proteine ist sehr schlecht”

Künstliche Süßstoffe4%

“Dieser typische Süßstoffgeschmack kommt für mich ziemlich durch”

Qualität insgesamt2%

“Das ist garantiert kein high quality Produkt”

beworben Vs Tatsächliches Produkt2%

“kein Shaker wie im Bild mitbekommen”

Löslichkeit2%

“Das Pulver löst sich relativ schlecht auf”

Funktionalität insgesamt1%

“Verschluss funktioniert nicht, da er voller Pulver ist”

Top return reasons

Geschmack49%
Geschmack insgesamt17%
Auslaufsicher13%
Qualität insgesamt5%
Produktzustand3%
beworben Vs Tatsächliches Produkt3%
Geruch3%
Gesamtgröße3%
Inhaltsstoffe – insgesamt3%
Nebenwirkungen3%

Common questions

Is iso whey profitable to sell on Amazon Germany?
The niche generates €242K/yr across 22 tracked products. 5 of 5 products launched in the last 360 days are still selling. 90-day search growth is +24.1%. Flapen's verdict: Worth a look (51/100).
How competitive is the iso whey niche?
7 brands and 38 sellers compete. The top 5 products take 55% of clicks and top 5 brands hold 95% of demand.
What do buyers complain about in iso whey?
Top complaints mined from reviews: Preis-Leistungs-Verhältnis, Geschmack insgesamt, Süße. The return rate is 0.1%.
When does demand for iso whey peak?
Demand is steady year-round — the busiest month runs 1.7× the quietest.
What does it cost to enter the iso whey niche?
Listings span €36.20–€139.81; the average listing price is €65.16 (sweet spot $15–$100). The average incumbent carries 4,509 reviews — the moat a new listing must climb.