ro membrane
Worth a lookShows a sweet-spot price point ($43.35 avg), but soft demand (-18.9% this quarter) keeps it on the watch list.
Avg price
Incredible$43.35avg listing price — sweet spot $15–$100
Price range
Great$12.75–$113.70cheapest to priciest tracked listing — scored on the share inside $15–$100
Returns
Great1.8%return rate — above 5% kills the launch gate
Conversion
Good5.4%search→purchase rate — share of searches ending in a sale
Competition
Good48%top-5 click share — leaders hold, buyers still browse
Review moat
Good1,051.16avg incumbent reviews — the moat a new listing must climb
Brand share
Good70%top-5 brand share — brands hold most of the demand
Quality gap
Okay4.5★avg incumbent rating — lower means beatable quality
Market size
Okay$129K$129K/yr · 55K searches
Growth
Bad-18.9%90-day search growth — must beat 0% to launch
According to Flapen's Amazon United States niche tracking, ro membrane is a $129K/yr Amazon United States market (55K searches/yr). The top 5 brands hold 70% of demand. Verdict: Worth a look — 52/100.
Data updated Jul 28, 2026 · scored weekly · How we score niches
ro membrane market data
- Units sold / yr
- 3K–4K
- avg 0–100/product
- Revenue / yr
- $130K–$173K
- units × avg price
- Conversion rate
- 5.4%
- Avg BSR
- #522
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 97%
- Out of stock
- 2.6%
- Avg brand age
- 72 months
- Avg seller age
- 150 days
Competition & brand share
The top 5 products take 48% of clicks — established leaders, but buyers still shop beyond them.Brands
16 rising
Sellers
39
Top-5 brand share
70%
Top 20: 100%
Top-5 click share
48%
Top 20: 85%
Open market
24%
- Membrane Solutions26%
- Geekpure16%
- iSpring15%
- MewMore6%
- Dow Filmtec6%
- UOLAMS5%
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — -18.9% search growth over the last 90 days.No pronounced peak months · busiest ÷ quietest = 1.5×
Top ro membrane search terms
- ro membrane21K/yr
- ro membrane filter replacement10K/yr
- membrane9K/yr
- reverse osmosis membrane10K/yr
- ro membrane filter2K/yr
- reverse osmosis membrane filter3K/yr
Top ro membrane 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 24 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Membrane Solutions NSF/ANSI 58 Certified 50 GPD Reverse Osmosis Membrane
Membrane Solutions$17.794.6★3,221 rev
iSpring Greatwell NSF Certified Reverse Osmosis Membrane 75 GPD 11.75 X 1.75 Replacement Fits Standard Under Sink RO Drinking Water Filtration System MC7
iSpring$34.484.7★2,209 rev
Membrane Solutions NSF/ANSI 58 Certified 75 GPD Reverse Osmosis Membrane
Membrane Solutions$18.934.6★3,221 rev
Reverse Osmosis Membrane 100 GPD 11.75x1.75 RO Membrane Water Filter Replacement Fits Standard for Under Sink RO Drinking Water Filter Filtration Purifier System
UOLAMS$15.964.4★89 rev
75 GPD Reverse Osmosis Membrane-NSF Certificated (1)
Geekpure$16.074.6★901 rev
Newest
by launch dateReverse Osmosis Membrane 100 GPD 11.75x1.75 RO Membrane Water Filter Replacement Fits Standard for Under Sink RO Drinking Water Filter Filtration Purifier System
UOLAMS$15.9689 rev
SANDMONK Reverse Osmosis Membrane 50GPD 11.75x1.75 RO Membrane Water Filter Replacement Fits Under Sink RO Drinking Water Purifier System
Sandmonk$12.7542 rev
YKMGON 1812-50GPD Reverse Osmosis Membrane Kit with Housing
YKMGON$23.83176 rev
MewMore 75 GPD RO Membrane 11.75x1.75 Reverse Osmosis Membrane Filter Replacement Element for Under Sink RO Drinking Water Filter Purifier Filtration System 2-Pack
MewMore$24.1185 rev
Max Water ULP-4040 Reverse Osmosis 4 x 40 RO Membrane 2600 GPD For Water Purification Desalination Commercial Industrial Agricultural
Max Water$113.7045 rev
Trending
90-day click momentum75 GPD Reverse Osmosis Membrane-NSF Certificated (1)
Geekpure$16.074.6★
50 GPD Reverse Osmosis Membrane -NSF Certificated (1)
Geekpure$15.794.6★
Watts Premier RO Water Filter 50 GPD (Gallons Per Day) Semi-Permeable Membrane Replacement for Premier Standard Reverse Osmosis System Yellow Built-In Check Valve 1.8 Dia x 10.75 L 1-Pack
Watts Premier$44.304.6★
Max Water ULP-4040 Reverse Osmosis 4 x 40 RO Membrane 2600 GPD For Water Purification Desalination Commercial Industrial Agricultural
Max Water$113.704.0★
100 GPD Reverse Osmosis Membrane-NSF Certificated (1)
Geekpure$18.994.4★
What buyers say about ro membrane
What buyers praise and complain about, mined from review topics.What buyers love
“Works well for my refrigerator filters”
“Good quality cartridges at a fair price”
“Great value”
“Easy install”
“Works as advertised”
“Fit perfectly”
“Performance & Efficiency”
“Been using for years, no complaints”
“Great water every time for years”
“Easy”
What buyers complain about
“there was very poor filtering”
“Leaking connectors”
“this ended you costing me plenty”
“Not lasting long”
“Item listing is deceptive”
“Doesn't fit due to damaged connector”
“Poor quality fittings”
“Didn't work”
“the water flow becomes very slow”
“clogged or otherwise defective”
Top return reasons
Common questions
- Is ro membrane profitable to sell on Amazon United States?
- The niche generates $129K/yr across 32 tracked products. 90-day search growth is -18.9%. Flapen's verdict: Worth a look (52/100).
- How competitive is the ro membrane niche?
- 16 brands and 39 sellers compete. The top 5 products take 48% of clicks and top 5 brands hold 70% of demand.
- What do buyers complain about in ro membrane?
- Top complaints mined from reviews: Filtration, Leak-Proof, Value For Money. The return rate is 1.8%.
- When does demand for ro membrane peak?
- Demand is steady year-round — the busiest month runs 1.5× the quietest.
- What does it cost to enter the ro membrane niche?
- Listings span $12.75–$113.70; the average listing price is $43.35 (sweet spot $15–$100). The average incumbent carries 1,051 reviews — the moat a new listing must climb.