berkey shower filter
Skip itA concentrated shelf (top 5 take 100% of clicks) — this niche doesn't clear our bar today.
Returns
Great1.3%return rate — above 5% kills the launch gate
Avg price
Great$79.71avg listing price — sweet spot $15–$100
Quality gap
Great4.3★avg incumbent rating — lower means beatable quality
Price range
Good$35.48–$139.23cheapest to priciest tracked listing — scored on the share inside $15–$100
Conversion
Good4.3%search→purchase rate — share of searches ending in a sale
Market size
Okay$117K$117K/yr · 34K searches
Growth
Bad-2.2%90-day search growth — must beat 0% to launch
Review moat
Bad14,951.4avg incumbent reviews — the moat a new listing must climb
Competition
Bad100%top-5 click share — a locked-up shelf
Brand share
Bad100%top-5 brand share — brand-locked demand
According to Flapen's Amazon United States niche tracking, berkey shower filter is a $117K/yr Amazon United States market (34K searches/yr). The top 5 brands hold 100% of demand. Demand peaks in Nov. Verdict: Skip it — 38/100.
Data updated Jul 27, 2026 · scored weekly · How we score niches
berkey shower filter market data
- Units sold / yr
- 2K–2K
- avg 250–500/product
- Revenue / yr
- $120K–$159K
- units × avg price
- Conversion rate
- 4.3%
- Avg BSR
- #100
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 80%
- Out of stock
- 1.3%
- Avg brand age
- 40 months
- Avg seller age
- 162 days
Competition & brand share
The top 5 products capture 100% of clicks — a locked-up shelf that new listings rarely crack.Brands
3 falling
Sellers
9
Top-5 brand share
100%
Top 20: 100%
Top-5 click share
100%
Top 20: 100%
Open market
0%
- WEDDELL79%
- Berkey14%
- Aquabliss7%
- Open — no brand owns it (0%)
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — -2.2% search growth over the last 90 days.Peak months: Nov · busiest ÷ quietest = 2.1×
Top berkey shower filter search terms
- berkey shower filter15K/yr
- wendell duo shower filter6K/yr
- weddell duo shower head7K/yr
- weddel duo shower filter4K/yr
- berkey shower filter replacement2K/yr
Top berkey shower filter 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 5 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Weddell Duo Shower Filter NSF Certified Shower Filter for Chlorine Reduction Lead-Free Easy Installation Award-Winning Filter for Healthier Hair & Skin (White)
WEDDELL$87.164.0★2,039 rev
Berkey Shower Filter WITHOUT Shower Head - Reduces up to 95% of chlorine
Berkey$139.234.5★1,019 rev
Weddell Duo Shower Filter NSF Certified Shower Filter for Chlorine Reduction Lead-Free Easy Installation Award-Winning Filter for Healthier Hair & Skin (Black)
WEDDELL$87.464.0★2,039 rev
Weddell Duo Shower Filter Twin Pack Replacement Cartridges - NSF Certified Shower Filter Removes Chlorine PFAS & Particulates Clinically Tested For Healthier Skin & Hair (2+2)
WEDDELL$49.234.6★527 rev
Aquabliss High Output Revitalizing Shower Filter - Reduces Dry Itchy Skin Dandruff Eczema and Dramatically Improves The Condition of Your Skin Hair and Nails - Chrome (SF100)
Aquabliss$35.484.4★69,133 rev
Newest
by launch dateWeddell Duo Shower Filter Twin Pack Replacement Cartridges - NSF Certified Shower Filter Removes Chlorine PFAS & Particulates Clinically Tested For Healthier Skin & Hair (2+2)
WEDDELL$49.23527 rev
Weddell Duo Shower Filter NSF Certified Shower Filter for Chlorine Reduction Lead-Free Easy Installation Award-Winning Filter for Healthier Hair & Skin (White)
WEDDELL$87.162,039 rev
Weddell Duo Shower Filter NSF Certified Shower Filter for Chlorine Reduction Lead-Free Easy Installation Award-Winning Filter for Healthier Hair & Skin (Black)
WEDDELL$87.462,039 rev
Aquabliss High Output Revitalizing Shower Filter - Reduces Dry Itchy Skin Dandruff Eczema and Dramatically Improves The Condition of Your Skin Hair and Nails - Chrome (SF100)
Aquabliss$35.4869,133 rev
Berkey Shower Filter WITHOUT Shower Head - Reduces up to 95% of chlorine
Berkey$139.231,019 rev
Trending
90-day click momentumWeddell Duo Shower Filter NSF Certified Shower Filter for Chlorine Reduction Lead-Free Easy Installation Award-Winning Filter for Healthier Hair & Skin (Black)
WEDDELL$87.464.0★
Weddell Duo Shower Filter Twin Pack Replacement Cartridges - NSF Certified Shower Filter Removes Chlorine PFAS & Particulates Clinically Tested For Healthier Skin & Hair (2+2)
WEDDELL$49.234.6★
Weddell Duo Shower Filter NSF Certified Shower Filter for Chlorine Reduction Lead-Free Easy Installation Award-Winning Filter for Healthier Hair & Skin (White)
WEDDELL$87.164.0★
Aquabliss High Output Revitalizing Shower Filter - Reduces Dry Itchy Skin Dandruff Eczema and Dramatically Improves The Condition of Your Skin Hair and Nails - Chrome (SF100)
Aquabliss$35.484.4★
Berkey Shower Filter WITHOUT Shower Head - Reduces up to 95% of chlorine
Berkey$139.234.5★
What buyers say about berkey shower filter
What buyers praise and complain about, mined from review topics.What buyers love
“Easy Install”
“Filters well”
“Good quality, easy to assemble”
“My hair feels softer”
“Worth The Money”
“Works great”
“As Advertised”
“good water pressure”
“water feels good”
“Easy to use”
What buyers complain about
“Not a very good filter”
“Poor durability”
“its leaking”
“too expensive”
“a bit itchy”
“Cheap Quality”
“There is water squirting out of every slit”
“I found two things causing water flow issues: 1”
“Even the smell is gone”
“obviously not functional at all”
Top return reasons
Common questions
- Is berkey shower filter profitable to sell on Amazon United States?
- The niche generates $117K/yr across 5 tracked products. 90-day search growth is -2.2%. Flapen's verdict: Skip it (38/100).
- How competitive is the berkey shower filter niche?
- 3 brands and 9 sellers compete. The top 5 products take 100% of clicks and top 5 brands hold 100% of demand.
- What do buyers complain about in berkey shower filter?
- Top complaints mined from reviews: Filtration, Durability, Leak-Proof. The return rate is 1.3%.
- When does demand for berkey shower filter peak?
- Demand peaks in Nov; the busiest month runs 2.1× the quietest.
- What does it cost to enter the berkey shower filter niche?
- Listings span $35.48–$139.23; the average listing price is $79.71 (sweet spot $15–$100). The average incumbent carries 14,951 reviews — the moat a new listing must climb.