---
title: "Pool Liners 18ft Round Above Ground — $289K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/patio-lawn-garden/pool-liners-18ft-round-above-ground"
last_updated: "2026-08-11T04:51:51.173Z"
locale: en
meta:
description: "Niche score 58/100 · $289K/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 58/100 · $289K/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Pool Liners 18ft Round Above Ground — $289K/yr Amazon US Niche (2026) - Flapen"
---
# **pool liners 18ft round above ground**
**Worth a look**
Shows low returns (0.9%), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Market size 51Growth 93Conversion 19Competition 59Returns 95Price range 7Avg price 43Brand share 31Review moat 75Quality gap 67
**Returns**
**Incredible****0.9%**
return rate — above 5% kills the launch gate
**Growth**
**Great****+105.7%**
90-day search growth — must beat 0% to launch
**Review moat**
**Great****498**
avg incumbent reviews — the moat a new listing must climb
**Quality gap**
**Good****4.3★**
avg incumbent rating — lower means beatable quality
**Competition**
**Good****49%**
top-5 click share — leaders hold, buyers still browse
**Market size**
**Good****$289K**
$289K/yr · 84K searches
**Avg price**
**Okay****$222.96**
avg listing price — sweet spot $15–$100
**Brand share**
**Okay****86%**
top-5 brand share — brands hold most of the demand
**Conversion**
**Bad****1.5%**
search→purchase rate — share of searches ending in a sale
**Price range**
**Bad****$39.79–$950.88**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Signals**[** Trending**](https://flapen.com/research/niches?market=us&signal=trending "Search growth > 100% (90d)") [** No Dominant Brand**](https://flapen.com/research/niches?market=us&signal=no_dominant_brand "Top brand's click share < 20%") [** High Price**](https://flapen.com/research/niches?market=us&signal=high_price "Avg price > $50")
According to Flapen's Amazon United States niche tracking, pool liners 18ft round above ground is a $289K/yr Amazon United States market (84K searches/yr). The top 5 brands hold 86% of demand. Demand peaks in Apr–May–Jun–Jul. Verdict: Worth a look — 58/100.
Data updated Jul 24, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **pool liners 18ft round above ground market data**
- **Units sold / yr**
- **1K–1K**
- avg 0–100/product
- **Revenue / yr**
- **$223K–$279K**
- units × avg price
- **Conversion rate**
- **1.5%**
- **Avg BSR**
- **#410**
- **Page quality**
- **0%**
- **Prime**
- **39%**
- **Sponsored**
- **94%**
- **Out of stock**
- **13.3%**
- **Avg brand age**
- **39 months**
- **Avg seller age**
- **183 days**
## **Competition & brand share**
The top 5 products take 49% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**14 **▼falling
**Sellers**
**31**
**Top-5 brand share**
**86%**
Top 20: 100%
**Top-5 click share**
**49%**
Top 20: 89%
**Open market**
**10%**
- Smartline19% - Blue Wave19% - VEVOR17% - Swimline17% - Shop Square15% - Generic3% - Open — no brand owns it (8 brands, 10%)
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — +105.7% search growth over the last 90 days.
5K4KSpike '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Apr, May, Jun, Jul · busiest ÷ quietest = 26.0×
[**Open Trend **](https://flapen.com/research/us/patio-lawn-garden/pool-liners-18ft-round-above-ground/trend)
## **Top pool liners 18ft round above ground search terms**
- **intex pool liner replacement 18x52**8K/yr+151.2%0.1% conv. - **pool liner 18 ft round above ground**12K/yr-2.3%1.3% conv. - **18 round pool liner**7K/yr+181.5%1.5% conv. - **18 ft round pool liner**7K/yr+205.8%1.2% conv. - **18ft pool liner**6K/yr+141.3%1.7% conv. - **18 ft pool liner**6K/yr+156.8%1.5% conv. - **bestway 18 x 48 pool liner**5K/yr+233.3%0.4% conv. - **18 foot pool liner**5K/yr+156.2%1.4% conv. - **18 pool liner**6K/yr+110.6%1.4% conv. - **18ft round pool liner**4K/yr+215.8%1.4% conv. [**All search terms **](https://flapen.com/research/us/patio-lawn-garden/pool-liners-18ft-round-above-ground/search-terms)
## **Top pool liners 18ft round above ground 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%4%$12K8%$23K12%$35K16%$46K1101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 24 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Swimline 18 Foot Round Durable 20 Gauge Vinyl Wall Overlap Pool Liner Cover for 48 and 52 Inch Above Ground Swimming Pools Blue**Swimline**$174.35**4.4★972 rev](https://www.amazon.com/dp/B003TQMB7W) [2**Blue Wave Evening Bay 18-ft Round Overlap Pool Liner for Above-Ground Steel Wall Pools Weather-Resistant Standard-Gauge Vinyl with Welded Seams for 48/54-In Depth Walls - Dark Blue**Blue Wave**$218.44**4.0★194 rev](https://www.amazon.com/dp/B09WYH6LTV) [3**VEVOR 18-ft Round Above Ground Pool Liner Overlap Pool Liners Standard Gauge Vinyl 48-to-54inch Wall Height Designed for Steel Sided Above-Ground Swimming Pools**VEVOR**$162.34**4.3★231 rev](https://www.amazon.com/dp/B0DT917KV7) [4**VEVOR 18-ft Round Above Ground Pool Liner Overlap Pool Liners Thickend Upgraded Gauge Vinyl 48-to-54inch Wall Height Designed for Steel Sided Above-Ground Swimming Pools**VEVOR**$206.81**4.3★231 rev](https://www.amazon.com/dp/B0GK757KMV) [5**18 Foot Round Pool Liner for 48 and 52 Inch Above Ground Swimming Pools - Overlap Pool Liner Replacement Long Lasting Standard Gauge Easy Installation Blue Pebble**Shop Square**$150.13**4.4★24 rev](https://www.amazon.com/dp/B0F8RG8YL2)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Replacement Pool Liner for Bestway Power Steel and Pro Max 18ft x 48in Above Ground Round Swimming Pool Gray Liner Fits Only 2022+ Models**Generic**$309.90**1 rev2mo ago](https://www.amazon.com/dp/B0H1LFH8JL) [**Replacement Pool Liner for Coleman Power Steel 18ft x 48in Above Ground Swimming Pool Brown Metal Frame Liner Fits Only 2022+ Models**Generic**$354.20**2 rev2mo ago](https://www.amazon.com/dp/B0H1L6C98X) [**Pangda Unibead 18ft Round Pool Liner for Above Ground Steel Wall Pools Above Ground Pool Liners 47 Inch Wall Height Solid Blue Durable Vinyl Replacement Durable Vinyl Replacement Swimming Liner**Pangda**$156.43**3 rev4mo ago](https://www.amazon.com/dp/B0GQ991ZWC) [**VEVOR 18-ft Round Above Ground Pool Liner Overlap Pool Liners Thickend Upgraded Gauge Vinyl 48-to-54inch Wall Height Designed for Steel Sided Above-Ground Swimming Pools**VEVOR**$206.81**231 rev5mo ago](https://www.amazon.com/dp/B0GK757KMV) [**AquaJoyer 18 Round Thicker Heavy Duty Pool Liner Pad for Above Ground Pool Pool Padding Underlayment for Pool Bottom Protects Pool Prevents Punctures Weed Barrier Comfortable underfoot**AquaJoyer**$60.44**116 rev6mo ago](https://www.amazon.com/dp/B0GGB3X3FP)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Replacement Pool Liner for Coleman Power Steel 18ft x 48in Above Ground Swimming Pool Brown Metal Frame Liner Fits Only 2022+ Models**Generic**$354.20**5.0★**▲ 66%**](https://www.amazon.com/dp/B0H1L6C98X) [**Pangda Unibead 18ft Round Pool Liner for Above Ground Steel Wall Pools Above Ground Pool Liners 47 Inch Wall Height Solid Blue Durable Vinyl Replacement Durable Vinyl Replacement Swimming Liner**Pangda**$156.43**4.6★**▲ 66%**](https://www.amazon.com/dp/B0GQ991ZWC) [**Replacement Pool Liner for Bestway Power Steel and Pro Max 18ft x 48in Above Ground Round Swimming Pool Gray Liner Fits Only 2022+ Models**Generic**$309.90**5.0★**▲ 65%**](https://www.amazon.com/dp/B0H1LFH8JL) [**18 Foot Round Pool Liner for 48 and 52 Inch Above Ground Swimming Pools - Overlap Pool Liner Replacement Long Lasting Standard Gauge Easy Installation Blue Pebble**Shop Square**$150.13**4.4★**▲ 47%**](https://www.amazon.com/dp/B0F8RG8YL2) [**Smartline 18 ft Round Swimming Pool Liner | Boulder Swirl | Unibead Style | 52 Inch Wall Height | 20 Gauge Heavy Duty Virgin Vinyl | Designed for Steel Sided Above Ground Pools**Smartline**$296.29**4.3★**▲ 47%**](https://www.amazon.com/dp/B008B9ISYC)
**~~View all trending →~~**
## **What buyers say about pool liners 18ft round above ground**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Assembly/Installation**24%
*“Easy to install”*
**Size-Overall**16%
*“Fit perfect”*
**Quality-Overall**14%
*“very satisfied with this pool”*
**Durability**8%
*“Very durable”*
**Thickness**6%
*“Very nice thick quality”*
**Value For Money**6%
*“good price”*
**Material Quality**3%
*“Held up for 2 years now thick material very durable”*
**Strength**3%
*“Solid”*
**Soft Feel**3%
*“Definitely helped the bottom of the pool feel softer than prior yeara”*
**Ease Of Use**1%
*“Easy to put on and take off”*
### **What buyers complain about **
**Durability**20%
*“they never last more than a year”*
**Thickness**18%
*“Not much thickness to it”*
**Leak-Proof**10%
*“leaked like crazy”*
**Quality-Overall**9%
*“Feels like a very poor quality pool”*
**Value For Money**7%
*“Not worth it”*
**Size-Overall**5%
*“Dont fit in 18 feet pool”*
**Cushion**5%
*“Felt not padding”*
**Thin**3%
*“It's OK thinner than expected”*
**Water Resistance**3%
*“it is not puncture proof”*
**Advertised Vs Actual Product**2%
*“The description and most of the reviews are pure deception and lies”*
### **Top return reasons **
**Size-Overall**53%
**Advertised Vs Actual Product**6%
**Thin**6%
**Thickness**4%
**Material Quality**3%
**Defective Material/Parts**3%
**Value For Money**3%
**Water Resistance**2%
**Product Condition**2%
**Functionality-Overall**2%
## **Common questions**
- **Is pool liners 18ft round above ground profitable to sell on Amazon United States?**
- The niche generates $289K/yr across 31 tracked products. 5 of 6 products launched in the last 360 days are still selling. 90-day search growth is +105.7%. Flapen's verdict: Worth a look (58/100).
- **How competitive is the pool liners 18ft round above ground niche?**
- 14 brands and 31 sellers compete. The top 5 products take 49% of clicks and top 5 brands hold 86% of demand.
- **What do buyers complain about in pool liners 18ft round above ground?**
- Top complaints mined from reviews: Durability, Thickness, Leak-Proof. The return rate is 0.9%.
- **When does demand for pool liners 18ft round above ground peak?**
- Demand peaks in Apr–May–Jun–Jul; the busiest month runs 26.0× the quietest.
- **What does it cost to enter the pool liners 18ft round above ground niche?**
- Listings span $39.79–$950.88; the average listing price is $222.96 (sweet spot $15–$100). The average incumbent carries 498 reviews — the moat a new listing must climb.
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