pond liner 4m x 4m
Worth a lookShows low returns (0.3%), but a failed launch gate (market size, growth, or returns) 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
Growth
Great+91.9%90-day search growth — must beat 0% to launch
Conversion
Great9.1%search→purchase rate — share of searches ending in a sale
Price range
Great£8.67–£37.31cheapest to priciest tracked listing — scored on the share inside $15–$100
Quality gap
Good4.3★avg incumbent rating — lower means beatable quality
Review moat
Good1,050.56avg incumbent reviews — the moat a new listing must climb
Competition
Good53%top-5 click share — leaders hold, buyers still browse
Brand share
Okay75%top-5 brand share — brands hold most of the demand
Market size
Bad£26K£26K/yr · 14K searches
According to Flapen's Amazon United Kingdom niche tracking, pond liner 4m x 4m is a £26K/yr Amazon United Kingdom market (14K searches/yr). The top 5 brands hold 75% of demand. Verdict: Worth a look — 63/100.
Data updated Jul 25, 2026 · scored weekly · How we score niches
pond liner 4m x 4m market data
- Units sold / yr
- 1K–1K
- avg 0–100/product
- Revenue / yr
- £21K–£26K
- units × avg price
- Conversion rate
- 9.1%
- Avg BSR
- #21
- Page quality
- 0%
- Prime
- 48%
- Sponsored
- 81%
- Out of stock
- 13.0%
- Avg brand age
- 55 months
- Avg seller age
- 232 days
Competition & brand share
The top 5 products take 53% of clicks — established leaders, but buyers still shop beyond them.Brands
16 rising
Sellers
19
Top-5 brand share
75%
Top 20: 100%
Top-5 click share
53%
Top 20: 94%
Open market
21%
- Swell UK26%
- PondKraft24%
- MYPURECORE YOU AT THE CORE16%
- DIAH DO IT AT HOME5%
- AP Supplies4%
- HonGien4%
Top pond liner 4m x 4m 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
PondKraft 4m x 4mPond Liner | 25 YEAR GUARANTEE | Flexible and Durable | UV Resistant | Koi and Fish Pools | Heavy Duty
PondKraft£25.114.6★386 rev
Swell UK 4m x 4m Pond Liner | 25 Year Guarantee | HDPE | UV Resistant | Garden Fish Ponds
Swell UK£21.264.5★4,511 rev
MYPURECORE Pond Liner Various Sizes Heavy Duty HDPE Material - UV & Tear Resistant Flexible for Koi & Fish Pools Water Gardens - Ideal for Small to Large Ponds Wildlife (4m x 4m)
MYPURECORE YOU AT THE CORE£21.734.4★1,222 rev
Swell UK 4 x 4m Pond Liner and Free Underlay | Ideal for Koi & Fish Pools Fountains and Streams | Flexible & Impermeable for Reinforced Durable Landscaping | Heavy Duty HDPE - 40 Year Guarantee
Swell UK£37.124.5★2,887 rev
DIAH DO IT AT HOME 4m x 4m Garden Pond Liner 200gsm - Heavy Duty Waterproof Membrane for Fish Ponds Water Features & Koi Pools - UV & Puncture Resistant Outdoor Landscaping Liner (16 sqm)
DIAH DO IT AT HOME£13.173.9★16 rev
Newest
by launch date
CZMTBO Pond Liner 3X4M Heavy Duty Pond Liner 0.2mm Thick waterproof Membrane Black Plastic Sheeting Black Polythene Sheeting for Fish Ponds Garden Landscaping
CZMTBO£20.028 rev
MIKIICOCO Pond Liner 3 x 3m Waterproof Flexible
MIKIICOCO£13.00157 rev
HonGien Pond Liner High Tensile Waterproof Pond Liners Ideal for Fish Ponds Lotus Ponds Aquaculture Ponds Fountains Black Heavy Duty HDPE UV Resistance Garden Wildlife Pond Liners (3x4m)
HonGien£24.1738 rev
SDLDEER Pond Liner 3 x 4 m Black HDPE Pond Liners Heavy Duty Garden Fish Ponds Preformed Liners Garden Pond Lining for Fountains Fish Ponds Water Garden
SDLDEER£29.53230 rev
B2C Pond liner Heavy Duty Durable 25 year warranty 3D Pebbles 300gsm - 0.5mm thick (4m x 5m (13x16))
B2C£30.3494 rev
Trending
90-day click momentumPondKraft 4m x 3mPond Liner | 25 YEAR GUARANTEE | Flexible and Durable | UV Resistant | Koi and Fish Pools | Heavy Duty
PondKraft£20.044.6★
Storystore Pond Liner 3mx4m Preformed Pond Liner HDPE Black Heavy Duty Underlay Garden Membrane Pond Lining for Fish Pond Landscaping Garden Pool Water Feature Streams Fountains
Storystore£29.984.2★
MYPURECORE Pond Liner & Underlay Set HDPE Material UV & Tear Resistant Waterproof - Perfect for Small to Large Water Gardens Wildlife Ponds and Decorative Features (2.5m x 2.5m)
MYPURECORE YOU AT THE CORE£15.774.4★
Pond Liner 3 x 4 m - 200 GSM Flexible Tear-Resistant UV-Resistant Garden Fish Pond Liner for Water Features Koi Ponds Fountains Landscaping - Durable Long Lasting Heavy Duty Waterproof Sheet
SolaDirect£13.194.5★
CZMTBO Pond Liner 3X4M Heavy Duty Pond Liner 0.2mm Thick waterproof Membrane Black Plastic Sheeting Black Polythene Sheeting for Fish Ponds Garden Landscaping
CZMTBO£20.023.8★
What buyers say about pond liner 4m x 4m
What buyers praise and complain about, mined from review topics.What buyers love
“Great quality liner”
“Worth every penny”
“As described”
“Installed and finished easily”
“Pond liner great value for money more than enough size wise fast delivery perfect for the job of building a pond”
“works fine heavy duty”
“Excellent material”
“Very well made,strong durable and waterproof”
“strong easy to use looks good”
“the difference it makes to the garden is wonderful”
What buyers complain about
“Had a seam line”
“Developed a leak”
“Smaller than advertised”
“Product did not hold water”
“This is not good quality and leaked”
“black the other”
“Not as durable as I had hoped”
“it gets stuck down”
Top return reasons
Common questions
- Is pond liner 4m x 4m profitable to sell on Amazon United Kingdom?
- The niche generates £26K/yr across 27 tracked products. 0 of 1 products launched in the last 360 days are still selling. 90-day search growth is +91.9%. Flapen's verdict: Worth a look (63/100).
- How competitive is the pond liner 4m x 4m niche?
- 16 brands and 19 sellers compete. The top 5 products take 53% of clicks and top 5 brands hold 75% of demand.
- What do buyers complain about in pond liner 4m x 4m?
- Top complaints mined from reviews: Stitch/Finish/Polish, Leak-Proof, Size-Overall. The return rate is 0.3%.
- What does it cost to enter the pond liner 4m x 4m niche?
- Listings span £8.67–£37.31; the average listing price is £20.57 (sweet spot $15–$100). The average incumbent carries 1,051 reviews — the moat a new listing must climb.