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füller

Skip it

Brand-locked demand (top 5 brands take 100% of clicks) — this niche doesn't clear our bar today.

Market size 63Growth 13Conversion 22Competition 65Returns 92Price range 33Avg price 46Brand share 0Review moat 24Quality gap 24

Returns

Great1.1%

return rate — above 5% kills the launch gate

Competition

Good46%

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

Market size

Good€575K

€575K/yr · 2.8M searches

Avg price

Okay€11.46

avg listing price — sweet spot $15–$100

Price range

Okay€5.24–€19.84

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

Quality gap

Bad4.6★

avg incumbent rating — lower means beatable quality

Review moat

Bad5,855.78

avg incumbent reviews — the moat a new listing must climb

Conversion

Bad1.8%

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

Growth

Bad-24.1%

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

Brand share

Bad100%

top-5 brand share — brand-locked demand

According to Flapen's Amazon Germany niche tracking, füller is a €575K/yr Amazon Germany market (2.8M searches/yr). The top 5 brands hold 100% of demand. Verdict: Skip it — 40/100.

Data updated Jul 9, 2026 · scored weekly · How we score niches

füller market data

Units sold / yr
60K–80K
avg 2,500–3,000/product
Revenue / yr
€688K–€917K
units × avg price
Conversion rate
1.8%
Avg BSR
#9
Page quality
0%
Prime
100%
Sponsored
63%
Out of stock
2.3%
Avg brand age
55 months
Avg seller age
183 days

Competition & brand share

The top 5 products take 46% of clicks — established leaders, but buyers still shop beyond them.

Brands

5 falling

Sellers

166

Top-5 brand share

100%

Top 20: 100%

Top-5 click share

46%

Top 20: 90%

Open market

0%

  • Lamy53%
  • Pelikan31%
  • STABILO13%
  • Schneider2%
  • BOCIYER1%

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -24.1% search growth over the last 90 days.
90K70KPrime Day '24Spike '24Holiday '24Spike '25Prime Day '25Black Friday '25SepDecMarJunAugNovMarMay

No pronounced peak months · busiest ÷ quietest = 1.5×

Top füller search terms

  • füller788K/yr
  • lamy füller551K/yr
  • füller grundschule252K/yr
  • lamy190K/yr
  • pelikan füller190K/yr
  • füllfederhalter153K/yr
  • füller lamy126K/yr
  • fountain pen97K/yr
  • füllfeder98K/yr
  • lamy safari61K/yr
All search terms

Top füller 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%€58K20%€115K30%€173K40%€230K101001K10K100K Reviews — right = deep review moat Market share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

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

What buyers say about füller

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

What buyers love

Schreiberfahrung33%

“Schreibt super, ideale Kombination aus Füller und Roller Pen”

Qualität insgesamt15%

“Super produkt”

Griff8%

“liegt toll in der Hand.”

Gesamtgröße6%

“Passt”

Preis-Leistungs-Verhältnis5%

“Preis / Leistung okay”

Farbe4%

“Farbe wie abgebildet”

Design insgesamt3%

“Angenehm zu schreibender Füllhalter mit kindgerechtem Design”

Patrone/Tinte Qualität3%

“Rollt sehr leicht und ist echte Tinte...sehr nice”

Haltbarkeit2%

“altbewährt und immer noch gut”

Komfort insgesamt2%

“Liegt angenehm in der Hand, gerade, auch für Schreibanfänger”

What buyers complain about

Produktzustand14%

“Gebraucht”

Haltbarkeit14%

“Leider schnell defekt”

Schreiberfahrung10%

“Kratzt beim Schreiben”

Tintenleck10%

“Tinte läuft aus”

Qualität insgesamt9%

“Schlechte Qualität”

Geschenk Zweck4%

“Sorry das geht gar nicht, weil ich den Stift Heute verschenken wollte”

Stärke4%

“Stabilo nicht stabil yo”

Dicke3%
Preis-Leistungs-Verhältnis3%

“Den Preis nicht wert”

Einfache Reinigung3%

“Reinigen, neue Patronen, nichts hilft”

Top return reasons

Gesamtgröße17%
Farbe17%
Funktionalität insgesamt7%
Schreiberfahrung7%
Produktzustand6%
Tintennachfüllung6%
Defekt Material/Teile6%
Kratzfestigkeit4%
Auslaufsicher3%
Tintenleck2%

Common questions

Is füller profitable to sell on Amazon Germany?
The niche generates €575K/yr across 27 tracked products. 3 of 4 products launched in the last 360 days are still selling. 90-day search growth is -24.1%. Flapen's verdict: Skip it (40/100).
How competitive is the füller niche?
5 brands and 166 sellers compete. The top 5 products take 46% of clicks and top 5 brands hold 100% of demand.
What do buyers complain about in füller?
Top complaints mined from reviews: Produktzustand, Haltbarkeit, Schreiberfahrung. The return rate is 1.1%.
When does demand for füller peak?
Demand is steady year-round — the busiest month runs 1.5× the quietest.
What does it cost to enter the füller niche?
Listings span €5.24–€19.84; the average listing price is €11.46 (sweet spot $15–$100). The average incumbent carries 5,856 reviews — the moat a new listing must climb.