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tenstem eco basic

Skip it

A small market ($56K/yr) — this niche doesn't clear our bar today.

Market size 14Growth 24Conversion 30Competition 40Returns 77Price range 85Avg price 95Brand share 30Review moat 25Quality gap 48

Avg price

Incredible€37.56

avg listing price — sweet spot $15–$100

Price range

Great€8.34–€104.91

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

Returns

Great1.9%

return rate — above 5% kills the launch gate

Quality gap

Okay4.5★

avg incumbent rating — lower means beatable quality

Competition

Okay61%

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

Conversion

Okay2.4%

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

Brand share

Okay87%

top-5 brand share — brands hold most of the demand

Review moat

Bad4,869.87

avg incumbent reviews — the moat a new listing must climb

Growth

Bad-2.1%

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

Market size

Bad€56K

€56K/yr · 62K searches

According to Flapen's Amazon Germany niche tracking, tenstem eco basic is a €56K/yr Amazon Germany market (62K searches/yr). The top 5 brands hold 87% of demand. Verdict: Skip it — 40/100.

Data updated Jul 10, 2026 · scored weekly · How we score niches

tenstem eco basic market data

Units sold / yr
2K–2K
avg 100–250/product
Revenue / yr
€56K–€75K
units × avg price
Conversion rate
2.4%
Avg BSR
#40
Page quality
0%
Prime
96%
Sponsored
65%
Out of stock
7.7%
Avg brand age
46 months
Avg seller age
190 days

Competition & brand share

The top 5 products take 61% of clicks — established leaders, but buyers still shop beyond them.

Brands

11 rising

Sellers

72

Top-5 brand share

87%

Top 20: 100%

Top-5 click share

61%

Top 20: 97%

Open market

10%

  • Prorelax33%
  • Beurer30%
  • GHTENS10%
  • axion10%
  • Comfytemp4%
  • ELDE MEDICAL3%
  • Open — no brand owns it (5 brands, 10%)

Demand

Weekly Amazon search volume, last 19 weeks — -2.1% search growth over the last 90 days.
1K750Spike '26Mar '26Mar '26Apr '26May '26May '26Jun '26

Top tenstem eco basic search terms

  • tenstem eco basic27K/yr
  • tenstem eco basic schwa medico9K/yr
  • prorelax8K/yr
  • prorelax tens ems duo6K/yr
  • tenstem eco3K/yr
  • schwa medico tens gerät3K/yr
  • tenstem eco basic kaufen2K/yr
  • prorelax tens3K/yr
All search terms

Top tenstem eco basic 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%€6K20%€11K30%€17K40%€23K101001K10K100K Reviews — right = deep review moat Market share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 23 tracked products in this niche — three views at once, no toggling.

What buyers say about tenstem eco basic

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

What buyers love

Benutzerfreundlichkeit14%

“Einfache Handhabung”

Qualität insgesamt13%

“Quality”

Preis-Leistungs-Verhältnis12%

“Preis/Leistung super”

beworben Vs Tatsächliches Produkt8%

“Funktioniert”

Effizienz6%

“Verbesserung fest”

Haftung/Klebrigkeit5%

“Klebepads halten super”

Linderung von Muskelschmerzen4%

“Kombination aus reinem TENS zur Schmerzlinderung, EMS für das Muskeltraining und einer entspannenden Massagefunktion ist absolut gelungen.”

Akkulaufzeit4%

“Super akku”

Gesamtgröße3%

“Passt”

Gelenkschmerzen3%

“Es hilft und für den Preis empfehlenswert 👍 Wegen akuten Beschwerden im Nacken/Schulterbereich bestellt”

What buyers complain about

Haftung/Klebrigkeit11%

“Klebepads halten nicht”

Haltbarkeit10%

“Haltbarkeit fraglich, Ersatzteile teuer”

Anleitung/Benutzerhandbuch/Fehlerbehebung7%

“Schlechte Betriebsanleitung”

Funktionalität insgesamt7%

“Funktioniert nicht”

Benutzerfreundlichkeit6%

“Anbringen der Elektroden allein stellenweise problematisch”

Qualität insgesamt5%

“Müll”

Aufladen4%

“Ladeprobleme”

Gesamtgröße4%

“Passt nicht”

Akkulaufzeit3%

“Bin sehr enttäuscht über den Akku, der hält mal grade 150 Minuten”

Preis-Leistungs-Verhältnis3%

“Ein wenig teuer als beim Discounter”

Top return reasons

Funktionalität insgesamt24%
Gesamtgröße11%
Kompatibilität – insgesamt9%
Defekt Material/Teile8%
Benutzerfreundlichkeit6%
Haftung/Klebrigkeit6%
Gelenkschmerzen4%
Produktzustand3%
Stärke2%
beworben Vs Tatsächliches Produkt2%

Common questions

Is tenstem eco basic profitable to sell on Amazon Germany?
The niche generates €56K/yr across 23 tracked products. 2 of 2 products launched in the last 360 days are still selling. 90-day search growth is -2.1%. Flapen's verdict: Skip it (40/100).
How competitive is the tenstem eco basic niche?
11 brands and 72 sellers compete. The top 5 products take 61% of clicks and top 5 brands hold 87% of demand.
What do buyers complain about in tenstem eco basic?
Top complaints mined from reviews: Haftung/Klebrigkeit, Haltbarkeit, Anleitung/Benutzerhandbuch/Fehlerbehebung. The return rate is 1.9%.
What does it cost to enter the tenstem eco basic niche?
Listings span €8.34–€104.91; the average listing price is €37.56 (sweet spot $15–$100). The average incumbent carries 4,870 reviews — the moat a new listing must climb.