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58

soda siphon

Worth a look

Shows a sweet-spot price point ($41.76 avg), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.

Market size 19Growth 70Conversion 59Competition 53Returns 94Price range 82Avg price 95Brand share 4Review moat 86Quality gap 80

Avg price

Incredible€41.76

avg listing price — sweet spot $15–$100

Returns

Great1.1%

return rate — above 5% kills the launch gate

Review moat

Great284.76

avg incumbent reviews — the moat a new listing must climb

Price range

Great€7.44–€109.47

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

Quality gap

Great4.2★

avg incumbent rating — lower means beatable quality

Growth

Good+52.6%

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

Conversion

Good5.1%

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

Competition

Good53%

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

Market size

Bad€75K

€75K/yr · 35K searches

Brand share

Bad98%

top-5 brand share — brand-locked demand

According to Flapen's Amazon Germany niche tracking, soda siphon is a €75K/yr Amazon Germany market (35K searches/yr). The top 5 brands hold 98% of demand. Verdict: Worth a look — 58/100.

Data updated Jul 14, 2026 · scored weekly · How we score niches

soda siphon market data

Units sold / yr
2K–2K
avg 0–100/product
Revenue / yr
€63K–€84K
units × avg price
Conversion rate
5.1%
Avg BSR
#276
Page quality
0%
Prime
60%
Sponsored
56%
Out of stock
3.6%
Avg brand age
54 months
Avg seller age
203 days

Competition & brand share

The top 5 products take 53% of clicks — established leaders, but buyers still shop beyond them.

Brands

6 falling

Sellers

45

Top-5 brand share

98%

Top 20: 100%

Top-5 click share

53%

Top 20: 94%

Open market

0%

  • iSi82%
  • Mosa6%
  • TBRFP4%
  • NEMT4%
  • AstraLoom2%
  • Nuvantee2%

Demand

Weekly Amazon search volume, last 50 weeks — +52.6% search growth over the last 90 days.
1K750Black Friday '25Spike '26Aug '25Sep '25Nov '25Jan '26Mar '26May '26

Top soda siphon search terms

  • isi sodakapseln13K/yr
  • soda siphon12K/yr
  • isi sodamaker7K/yr
  • soda kapseln4K/yr
All search terms

Top soda siphon 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%€8K20%€15K30%€23K40%€30K101001K10K 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 soda siphon

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

What buyers love

Preis-Leistungs-Verhältnis30%

“Bester Preis”

Benutzerfreundlichkeit12%

“Easy”

Gesamtgröße12%

“Passt perfekt, und sprudelt echt gut”

Qualität insgesamt10%

“Super Produkt”

beworben Vs Tatsächliches Produkt9%

“Genau so wünscht man sich das – ohne Aufwand, ohne Kleckern, ohne Überraschungen”

Kompatibilität – insgesamt4%

“Funktioniert beim alten Heimsprudler einwandfrei”

Recyceln/Wiederverwenden2%

“sind vollständig recycelbar”

Temperaturerhaltung2%

“bleibt lange Zeit kühl”

Design insgesamt2%

“Schöner Design”

Dicke2%

“dichten zuverlässig ab,”

What buyers complain about

Preis-Leistungs-Verhältnis14%

“Allerdings eine Patrone für die Flasche auf lange Zeit zu teuer”

Abgabemechanismus9%

“Nicht für Sahnespender geeignet”

Benutzerfreundlichkeit9%

“Anwendung ist etwas aufwendig”

Qualität insgesamt9%

“Quatsch”

Funktionalität insgesamt9%

“Na ja, funktioniert eben anders als die alten Modelle”

Stärke9%

“gar nicht gut hat kein Kraft man braucht 2 davon für ein liter Wasser”

Gesamtgröße6%

“passt nicht”

Haltbarkeit5%

“Schnell kaputt - leider”

beworben Vs Tatsächliches Produkt5%

“war in der Anzeige nicht ersichtlich”

Dicke3%

“- hierfür sind sie zu dick im "Hals"-Bereich.”

Top return reasons

Gesamtgröße38%
Kompatibilität – insgesamt15%
Funktionalität insgesamt10%
beworben Vs Tatsächliches Produkt7%
Auslaufsicher5%
Preis-Leistungs-Verhältnis3%
Defekt Material/Teile3%
Qualität insgesamt2%
Farbe2%
Geruch2%

Common questions

Is soda siphon profitable to sell on Amazon Germany?
The niche generates €75K/yr across 25 tracked products. 1 of 3 products launched in the last 360 days are still selling. 90-day search growth is +52.6%. Flapen's verdict: Worth a look (58/100).
How competitive is the soda siphon niche?
6 brands and 45 sellers compete. The top 5 products take 53% of clicks and top 5 brands hold 98% of demand.
What do buyers complain about in soda siphon?
Top complaints mined from reviews: Preis-Leistungs-Verhältnis, Abgabemechanismus, Benutzerfreundlichkeit. The return rate is 1.1%.
What does it cost to enter the soda siphon niche?
Listings span €7.44–€109.47; the average listing price is €41.76 (sweet spot $15–$100). The average incumbent carries 285 reviews — the moat a new listing must climb.