Is kellerfenster profitable to sell on Amazon Germany?

The niche generates €24K/yr across 37 tracked products. 0 of 4 products launched in the last 360 days are still selling. 90-day search growth is -14.2%. Flapen's verdict: Skip it (42/100).

How competitive is the kellerfenster niche?

10 brands and 9 sellers compete. The top 5 products take 41% of clicks and top 5 brands hold 94% of demand.

What do buyers complain about in kellerfenster?

Top complaints mined from reviews: Gesamtgröße, Stärke, Gleichgewicht/Stabilität. The return rate is 0.0%.

When does demand for kellerfenster peak?

Demand is steady year-round — the busiest month runs 1.7× the quietest.

What does it cost to enter the kellerfenster niche?

Listings span €32.67–€159.12; the average listing price is €83.56 (sweet spot $15–$100). The average incumbent carries 948 reviews — the moat a new listing must climb.

kellerfenster

Skip it

A small market ($24K/yr) — this niche doesn't clear our bar today.

Returns

Incredible0.0%

return rate — above 5% kills the launch gate

Avg price

Great€83.56

avg listing price — sweet spot $15–$100

Competition

Good41%

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

Review moat

Good948.49

avg incumbent reviews — the moat a new listing must climb

Price range

Good€32.67–€159.12

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

Quality gap

Okay4.5★

avg incumbent rating — lower means beatable quality

Growth

Bad-14.2%

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

Brand share

Bad94%

top-5 brand share — brand-locked demand

Conversion

Bad0.7%

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

Market size

Bad€24K

€24K/yr · 39K searches

Signals High Price

According to Flapen's Amazon Germany niche tracking, kellerfenster is a €24K/yr Amazon Germany market (39K searches/yr). The top 5 brands hold 94% of demand. Verdict: Skip it — 42/100.

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

kellerfenster market data

Units sold / yr: 500–750; avg 0–100/product
Revenue / yr: €42K–€63K; units × avg price
Conversion rate: 0.7%
Avg BSR: #12
Page quality: 0%
Prime: 5%
Sponsored: 54%
Out of stock: 18.4%
Avg brand age: 64 months
Avg seller age: 202 days

Competition & brand share

The top 5 products take 41% of clicks — established leaders, but buyers still shop beyond them.

Brands

10 flat

Sellers

Top-5 brand share

94%

Top 20: 100%

Top-5 click share

41%

Top 20: 83%

Open market

Framelux38%
JeCo30%
Framex18%
Generisch6%
Trobak3%
Panorama242%
Open — no brand owns it (4 brands, 4%)

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -14.2% search growth over the last 90 days.

No pronounced peak months · busiest ÷ quietest = 1.7×

Open Trend

Top kellerfenster search terms

kellerfenster 60x4013K/yr -10.2%1.0% conv.
kellerfenster 100x508K/yr -20.3%0.9% conv.
fenster 40x405K/yr +28.1%1.1% conv.
kellerfenster 80x505K/yr -29.3%1.1% conv.
kellerfenster 100x605K/yr -32.0%0.6% conv.
werkzeugbilligercom2K/yr +10.4%0.0% conv.
kellerfenster 80 x 402K/yr -19.8%0.3% conv.

All search terms

Top kellerfenster 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★)1 product missing review or click data not plotted

All 24 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

Kellerfenster - Kunststoff - Fenster - innen weiß/außen weiß - BxH: 50 x 40 cm - 500 x 400 mm - DIN Links - 2 fach Verglasung - 60 mm Profil

JeCo€44.754.6★3,128 rev

Kellerfenster Kunststofffenster weiß BxH: 60 x 40 cm / 600 x 400 mm 2-fach Verglasung (32 mm) Dreh-Kipp inkl. Pilzkopfverriegelung DIN Rechts (Griff Links) 60 mm Profil

Framelux€67.954.5★565 rev

Kellerfenster Kunststofffenster weiß BxH: 100 x 60 cm / 1000 x 600 mm 2-fach Verglasung (32 mm) Dreh-Kipp inkl. Pilzkopfverriegelung DIN Rechts (Griff Links) 70 mm Profil

Framelux€108.624.5★565 rev

Kellerfenster Kunststofffenster weiß BxH: 100 x 50 cm / 1000 x 500 mm 2-fach Verglasung (32 mm) Dreh-Kipp inkl. Pilzkopfverriegelung DIN Rechts (Griff Links) 60 mm Profil

Framelux€105.294.5★565 rev

Kunststofffenster Kellerfenster Fenster - 2 Fach Verglasung - weiß/weiß - BxH: 500x400 mm - DIN Links

Generisch€44.654.3★48 rev

Newest

by launch date

Framex Kellerfenster PVC Fenster Weiß 60 x 40 cm (600 x 400 mm) 2-Fach Verglasung Kippfenster Kunststofffenster Für Keller Garage Nebenräume Wartungsfrei

Framex€51.890 rev

2mo ago

Framex Kellerfenster Festverglasung Weiß 2-fach 40 x 40 cm Kunststofffenster PVC mit 32 mm Verglasung (4/24/4) festes Fenster für Garage und Gartenhaus BxH 400 x 400 mm

Framex€32.6727 rev

10mo ago

Framex Kellerfenster Kippfenster Weiß 2-fach 40 x 40 cm Kunststofffenster PVC mit 32 mm Verglasung (4/24/4) Fenster zum Kippen für Garage und Gartenhaus BxH 400 x 400 mm

Framex€60.6527 rev

10mo ago

Framex Kellerfenster Kleines Fenster Weiß 40 x 40 cm (400 x 400 mm) 2-fach (32 mm) Dreh Kipp DIN Rechts PVC 58mm Profil 4-Kammer-System inkl. Griff Premium

Framex€80.38186 rev

1y ago

Kunststofffenster Kellerfenster Fenster - 2 Fach Verglasung - weiß/weiß - BxH: 500x400 mm - DIN Links

Generisch€44.6548 rev

1y ago

What buyers say about kellerfenster

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

What buyers love

Qualität insgesamt36%

“Verarbeitungsqualität: ⭐️⭐️⭐️⭐️”

Montage/Installation25%

“Einbau unkompliziert”

Preis-Leistungs-Verhältnis20%

“Guter Preis”

beworben Vs Tatsächliches Produkt7%

“Artikel wie beschrieben”

Einstellbarkeit/Drehbarkeit/lehnend2%

“man braucht fast keine einstellung vornehmen.”

Gesamtgröße2%

“passt das.”

Verriegelungsmechanismus2%

“Der Mechanismus ist leichtgängig”

Benutzerfreundlichkeit2%

“Ein einfaches,”

Materialqualität2%

“Materialbeschaffenheit: ⭐️⭐️⭐️⭐️”

What buyers complain about

Gesamtgröße67%

“Super kleines Fenster”

Stärke17%

“Nicht sehr stabil”

Gleichgewicht/Stabilität17%

“Nicht sehr stabil”

Top return reasons

Gesamtgröße58%

Defekt Material/Teile10%

beworben Vs Tatsächliches Produkt10%

Messung / Ablesegenauigkeit6%

Montage/Installation3%

Kompatibilität – insgesamt3%

Höhe3%

Materialqualität3%

Funktionalität insgesamt3%

Common questions

Is kellerfenster profitable to sell on Amazon Germany?: The niche generates €24K/yr across 37 tracked products. 0 of 4 products launched in the last 360 days are still selling. 90-day search growth is -14.2%. Flapen's verdict: Skip it (42/100).
How competitive is the kellerfenster niche?: 10 brands and 9 sellers compete. The top 5 products take 41% of clicks and top 5 brands hold 94% of demand.
What do buyers complain about in kellerfenster?: Top complaints mined from reviews: Gesamtgröße, Stärke, Gleichgewicht/Stabilität. The return rate is 0.0%.
When does demand for kellerfenster peak?: Demand is steady year-round — the busiest month runs 1.7× the quietest.
What does it cost to enter the kellerfenster niche?: Listings span €32.67–€159.12; the average listing price is €83.56 (sweet spot $15–$100). The average incumbent carries 948 reviews — the moat a new listing must climb.