Is fensterstopper profitable to sell on Amazon Germany?

The niche generates €158K/yr across 18 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is +273.7%. Flapen's verdict: Worth a look (54/100).

How competitive is the fensterstopper niche?

8 brands and 30 sellers compete. The top 5 products take 59% of clicks and top 5 brands hold 95% of demand.

What do buyers complain about in fensterstopper?

Top complaints mined from reviews: Gesamtgröße, Funktionalität insgesamt, Kompatibilität – insgesamt. The return rate is 1.0%.

When does demand for fensterstopper peak?

Demand peaks in Jun–Jul–Aug; the busiest month runs 7.9× the quietest.

What does it cost to enter the fensterstopper niche?

Listings span €1.85–€40.14; the average listing price is €10.28 (sweet spot $15–$100). The average incumbent carries 3,830 reviews — the moat a new listing must climb.

fensterstopper

Worth a look

Shows demand growing +273.7% this quarter, but brand-locked demand (top 5 brands take 95% of clicks) keeps it on the watch list.

Growth

Incredible+273.7%

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

Returns

Incredible1.0%

return rate — above 5% kills the launch gate

Price range

Good€1.85–€40.14

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

Conversion

Good4.3%

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

Quality gap

Okay4.5★

avg incumbent rating — lower means beatable quality

Competition

Okay59%

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

Avg price

Okay€10.28

avg listing price — sweet spot $15–$100

Market size

Okay€158K

€158K/yr · 361K searches

Review moat

Okay3,829.67

avg incumbent reviews — the moat a new listing must climb

Brand share

Bad95%

top-5 brand share — brand-locked demand

Signals Trending

According to Flapen's Amazon Germany niche tracking, fensterstopper is a €158K/yr Amazon Germany market (361K searches/yr). The top 5 brands hold 95% of demand. Demand peaks in Jun–Jul–Aug. Verdict: Worth a look — 54/100.

Data updated Jul 8, 2026 · scored weekly · How we score niches

fensterstopper market data

Units sold / yr: 15K–20K; avg 1,000–1,250/product
Revenue / yr: €154K–€206K; units × avg price
Conversion rate: 4.3%
Avg BSR: #37
Page quality: 0%
Prime: 100%
Sponsored: 89%
Out of stock: 0.4%
Avg brand age: 39 months
Avg seller age: 187 days

Competition & brand share

The top 5 products take 59% of clicks — established leaders, but buyers still shop beyond them.

Brands

8 falling

Sellers

Top-5 brand share

95%

Top 20: 100%

Top-5 click share

59%

Top 20: 100%

Open market

Stoppy45%
LouMaxx23%
Vlippy12%
WENKO9%
Homery6%
Quality-Collection2%
Open — no brand owns it (2 brands, 3%)

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — +273.7% search growth over the last 90 days.

Peak months: Jun, Jul, Aug · busiest ÷ quietest = 7.9×

Open Trend

Top fensterstopper search terms

fensterstopper166K/yr +290.4%3.7% conv.
fensterstopper beim lüften37K/yr +340.8%3.8% conv.
fenster stopper31K/yr +211.0%3.4% conv.
fenster offenhalter17K/yr +252.0%3.5% conv.
fensterkeile14K/yr +188.3%1.9% conv.
fensterkeile zum lüften9K/yr +321.2%3.8% conv.
fenster aufhalter9K/yr +217.4%4.2% conv.
fensterklammer9K/yr +269.8%4.4% conv.
stoppy10K/yr +392.1%4.9% conv.
fenster stopper wind6K/yr +402.5%2.9% conv.

All search terms

Top fensterstopper 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.

Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 18 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

Stoppy Stoppi Fensterstopper Türstopper Türkeil Türhaken Fensterklammer 2er Set (erhältlich in 14 Farben) (schwarz)

Stoppy€9.834.6★11,338 rev

Vlippy Tür- & Fensterstopper 2 Stück | Verhindert das Zuschlagen von Fenstern & Türen endlich Lüften ohne Sorge | Einfache Montage ohne Bohren - einfach kleben vlippen fertig

Vlippy€12.124.3★385 rev

Stoppy Stoppi Fensterstopper Türstopper Türkeil Türhaken Fensterklammer 4er Set (erhältlich in 14 Farben) (schwarz)

Stoppy€16.214.6★6,544 rev

LouMaxx Fensterstopper 6er Set Fensterklammer Klemmschutz Fenster Zuverlässige Sicherheit

LouMaxx€8.694.5★1,956 rev

WENKO Multi-Stop Mod. Multi-STOP vielseitiger Tür-& Fensterstopper Puffer Türpuffer Keil Fingerschutz für Türen Fenster & Schubladen flexibel anpassbar aus Kunststoff Maße 11 8 x 7 7 x 2 5cm Anthrazit

WENKO€3.504.6★1,866 rev

Newest

by launch date

Vlippy Tür- & Fensterstopper 2 Stück | Verhindert das Zuschlagen von Fenstern & Türen endlich Lüften ohne Sorge | Einfache Montage ohne Bohren - einfach kleben vlippen fertig

Vlippy€12.12385 rev

11mo ago

6 Stück Klemmschutz Für Türen Kinder Fensterstopper Beim Lüften Türstopper Tür Tür Klemmschutz für Türen Türstopper Kindersicherung Türen

SSHUIKKAI€4.3011 rev

1y ago

LouMaxx Fensterstopper beim Lüften Türkeil Der Allrounder im Bereich Fensterkeile und Türstopper Boden Fenster Stopper Gummi 2er Pack in Schwarz

LouMaxx€9.05106 rev

1y ago

LouMaxx Fensterstopper 2er Set Fensterklammer Klemmschutz Fenster Zuverlässige Sicherheit

LouMaxx€6.4034 rev

1y ago

Fensterstopper [2er Set] Fensterstopper beim Lüften Fensterkeil & Balkontür Stopper Fenster Offenhalter & Fensterfeststeller ohne Bohren für Fenster und Türen

Homery€8.0258 rev

1y ago

What buyers say about fensterstopper

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

What buyers love

beworben Vs Tatsächliches Produkt13%

“Tut super was es soll”

Benutzerfreundlichkeit11%

“Easy”

Qualität insgesamt11%

“Super Produkt”

Preis-Leistungs-Verhältnis8%

“waren preiswert”

Haltbarkeit6%

“Hält sehr gut”

Verriegelungsmechanismus6%

“Ist ein Tür- und Festerstopper und genau das macht es”

Effizienz6%

“Funktioniert sehr gut”

Stärke5%

“Sehr robust”

Montage/Installation4%

“Einfach Installation - Qualität TOP”

Gesamtgröße4%

“Fensterstopper [2er Set] passen super”

What buyers complain about

Gesamtgröße17%

“Passt nicht”

Funktionalität insgesamt14%

“Funktioniert nicht”

Kompatibilität – insgesamt11%

“nicht immer kompatibel”

Haftung/Klebrigkeit11%

“Zuerst einmal ging die Schutzfolie vom Klebestreifen fast gar nicht ab”

Haltbarkeit11%

“Hält nicht”

Verriegelungsmechanismus5%

“Klappt nicht”

Stärke3%

“Hält nur mäßig”

Griff3%

“Das Ding rutscht einfach mit der Tür mit”

Hartes Gefühl3%

“Etwas groß und hart”

Preis-Leistungs-Verhältnis2%

“Geld rausgeschmissen”

Top return reasons

Gesamtgröße39%

Funktionalität insgesamt19%

Kompatibilität – insgesamt6%

Mechanismus probleme5%

Defekt Material/Teile5%

Farbe3%

beworben Vs Tatsächliches Produkt3%

Haftung/Klebrigkeit3%

Haltbarkeit2%

Griff2%

Common questions

Is fensterstopper profitable to sell on Amazon Germany?: The niche generates €158K/yr across 18 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is +273.7%. Flapen's verdict: Worth a look (54/100).
How competitive is the fensterstopper niche?: 8 brands and 30 sellers compete. The top 5 products take 59% of clicks and top 5 brands hold 95% of demand.
What do buyers complain about in fensterstopper?: Top complaints mined from reviews: Gesamtgröße, Funktionalität insgesamt, Kompatibilität – insgesamt. The return rate is 1.0%.
When does demand for fensterstopper peak?: Demand peaks in Jun–Jul–Aug; the busiest month runs 7.9× the quietest.
What does it cost to enter the fensterstopper niche?: Listings span €1.85–€40.14; the average listing price is €10.28 (sweet spot $15–$100). The average incumbent carries 3,830 reviews — the moat a new listing must climb.

fensterstopper

fensterstopper market data

Competition & brand share

Demand & seasonality

Top fensterstopper search terms

Top fensterstopper products on Amazon

Top sellers

Newest

Trending

What buyers say about fensterstopper

What buyers love

What buyers complain about

Top return reasons

Common questions

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