ck one
Worth a lookShows low returns (0.3%), but brand-locked demand (top 5 brands take 100% of clicks) keeps it on the watch list.
Returns
Incredible0.3%return rate — above 5% kills the launch gate
Avg price
Great€20.57avg listing price — sweet spot $15–$100
Conversion
Good6.2%search→purchase rate — share of searches ending in a sale
Market size
Good€509K€509K/yr · 397K searches
Price range
Good€5.39–€29.57cheapest to priciest tracked listing — scored on the share inside $15–$100
Quality gap
Okay4.5★avg incumbent rating — lower means beatable quality
Growth
Okay+12.2%90-day search growth — must beat 0% to launch
Competition
Okay64%top-5 click share — leaders hold, buyers still browse
Review moat
Bad12,541.91avg incumbent reviews — the moat a new listing must climb
Brand share
Bad100%top-5 brand share — brand-locked demand
According to Flapen's Amazon Germany niche tracking, ck one is a €509K/yr Amazon Germany market (397K searches/yr). The top 5 brands hold 100% of demand. Demand peaks in Jul–Aug–Sep–Oct. Verdict: Worth a look — 50/100.
Data updated Jul 14, 2026 · scored weekly · How we score niches
ck one market data
- Units sold / yr
- 20K–25K
- avg 1,000–1,250/product
- Revenue / yr
- €411K–€514K
- units × avg price
- Conversion rate
- 6.2%
- Avg BSR
- #162
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 73%
- Out of stock
- 0.8%
- Avg brand age
- 54 months
- Avg seller age
- 174 days
Competition & brand share
The top 5 products take 64% of clicks — established leaders, but buyers still shop beyond them.Brands
3 flat
Sellers
40
Top-5 brand share
100%
Top 20: 100%
Top-5 click share
64%
Top 20: 97%
Open market
0%
- Calvin Klein67%
- LeGer by Lena Gercke18%
- ONLY16%
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — +12.2% search growth over the last 90 days.Peak months: Jul, Aug, Sep, Oct · busiest ÷ quietest = 6.8×
Top ck one search terms
- ck one102K/yr
- ck one parfum45K/yr
- leger18K/yr
- ck one 200ml37K/yr
- calvin klein parfum männer30K/yr
- calvin klein parfum25K/yr
- brudi parfum23K/yr
- ck be18K/yr
- fragrance12K/yr
- calvin klein one12K/yr
Top ck one 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.
All 22 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Calvin Klein CK ONE Eau de Toilette
Calvin Klein€16.934.6★23,718 rev
Calvin Klein CK ONE Eau de Toilette
Calvin Klein€25.834.7★37,512 rev
Calvin Klein CK ONE Eau de Toilette
Calvin Klein€20.544.7★37,512 rev
ONLY Onljudy-O Lw Wide Leg DNM Tai712 Noos
ONLY€27.693.9★40 rev
ONLY Onlmadisonblush Hw Wide Sb DNM Rea02Noos
ONLY€29.574.2★71 rev
Newest
by launch date
LeGer Tessy T-Shirt - Kurzarm Tshirt Damen mit Knotendetail - lockere Passform - Oberteil aus Baumwolle - Mode für Damen - by Lena Gercke - Gr. 34-97
LeGer by Lena Gercke€18.9825 rev
LeGer Tessy T-Shirt - Kurzarm Tshirt Damen mit Knotendetail - lockere Passform - Oberteil aus Baumwolle - Mode für Damen - by Lena Gercke - Gr. 34-103
LeGer by Lena Gercke€18.8925 rev
LeGer Jenny Sweater - Half Zip Pullover Damen mit Kragen - Oversized-Passform - Sweatshirt aus Baumwolle - Mode für Damen - by Lena Gercke - Gr. 34-45
LeGer by Lena Gercke€24.7823 rev
LeGer Jenny Sweater - Half Zip Pullover Damen mit Kragen - Oversized-Passform - Sweatshirt aus Baumwolle - Mode für Damen - by Lena Gercke - Gr. 34-46
LeGer by Lena Gercke€26.5923 rev
LeGer Abby Hoodie - Pullover Damen mit Kapuze - Oversized-Passform - Sweater aus Baumwolle - Mode für Damen - by Lena Gercke - Gr. 34-114
LeGer by Lena Gercke€22.7524 rev
Trending
90-day click momentum
ONLY Onljudy-O Lw Wide Leg DNM Tai433 Noos
ONLY€25.824.6★
LeGer Tessy T-Shirt - Kurzarm Tshirt Damen mit Knotendetail - lockere Passform - Oberteil aus Baumwolle - Mode für Damen - by Lena Gercke - Gr. 34-97
LeGer by Lena Gercke€18.984.6★
ONLY Onlmadisonblush Hw Wide Sb DNM Rea02Noos
ONLY€29.574.2★
LeGer Abby Hoodie - Pullover Damen mit Kapuze - Oversized-Passform - Sweater aus Baumwolle - Mode für Damen - by Lena Gercke - Gr. 34-114
LeGer by Lena Gercke€22.754.7★
ONLY Onljudy-O Lw Wide Leg DNM Tai712 Noos
ONLY€27.693.9★
What buyers say about ck one
What buyers praise and complain about, mined from review topics.What buyers love
“CK Parfüm”
“Super Produkt”
“Cool und bequem”
“passt alles”
“Super Preis”
“Wie erwartet topp”
“Material super”
“Einfach und gut”
“Stylisches Shirt mit besonderem Detail – bequem und vielseitig kombinierba”
“Joar besonders im Sommer sehr angenehm”
What buyers complain about
“Qualitätsprobleme”
“Ich bin mit dem Duft nicht wirklich begeistert”
“Fallen recht groß aus”
“hält nicht ganz so lange”
“Ebenfalls recht teuer”
“Sportliches Aussehen, sehr dünner Stoff”
“Neuer Name, altes Produkt”
“Klebeband um die Verpackung, kein Original”
“Zu dünn”
“fühlt sich nicht so elastisch an”
Top return reasons
Common questions
- Is ck one profitable to sell on Amazon Germany?
- The niche generates €509K/yr across 22 tracked products. 0 of 5 products launched in the last 360 days are still selling. 90-day search growth is +12.2%. Flapen's verdict: Worth a look (50/100).
- How competitive is the ck one niche?
- 3 brands and 40 sellers compete. The top 5 products take 64% of clicks and top 5 brands hold 100% of demand.
- What do buyers complain about in ck one?
- Top complaints mined from reviews: Qualität insgesamt, Geruch, Gesamtgröße. The return rate is 0.3%.
- When does demand for ck one peak?
- Demand peaks in Jul–Aug–Sep–Oct; the busiest month runs 6.8× the quietest.
- What does it cost to enter the ck one niche?
- Listings span €5.39–€29.57; the average listing price is €20.57 (sweet spot $15–$100). The average incumbent carries 12,542 reviews — the moat a new listing must climb.