Is gas line profitable to sell on Amazon United States?

The niche generates $126K/yr across 31 tracked products. 0 of 4 products launched in the last 360 days are still selling. 90-day search growth is -14.2%. Flapen's verdict: Worth a look (50/100).

How competitive is the gas line niche?

21 brands and 28 sellers compete. The top 5 products take 46% of clicks and top 5 brands hold 52% of demand.

What do buyers complain about in gas line?

Top complaints mined from reviews: Leak-Proof, Size-Overall, Quality-Overall. The return rate is 3.3%.

When does demand for gas line peak?

Demand peaks in Jan–Nov–Dec; the busiest month runs 1.9× the quietest.

What does it cost to enter the gas line niche?

Listings span $10.12–$71.57; the average listing price is $28.67 (sweet spot $15–$100). The average incumbent carries 1,035 reviews — the moat a new listing must climb.

gas line

Worth a look

Shows a sweet-spot price point ($28.67 avg), but soft demand (-14.2% this quarter) keeps it on the watch list.

Avg price

Incredible$28.67

avg listing price — sweet spot $15–$100

Price range

Great$10.12–$71.57

cheapest to priciest tracked listing — scored on the share inside $15–$100

Brand share

Great52%

top-5 brand share — no brand owns this niche

Competition

Good46%

top-5 click share — leaders hold, buyers still browse

Review moat

Good1,035.23

avg incumbent reviews — the moat a new listing must climb

Returns

Okay3.3%

return rate — above 5% kills the launch gate

Quality gap

Okay4.5★

avg incumbent rating — lower means beatable quality

Conversion

Okay2.9%

search→purchase rate — share of searches ending in a sale

Market size

Okay$126K

$126K/yr · 150K searches

Growth

Bad-14.2%

90-day search growth — must beat 0% to launch

Signals Low Review Barrier

According to Flapen's Amazon United States niche tracking, gas line is a $126K/yr Amazon United States market (150K searches/yr). The top 5 brands hold 52% of demand. Demand peaks in Jan–Nov–Dec. Verdict: Worth a look — 50/100.

Data updated Jul 5, 2026 · scored weekly · How we score niches

gas line market data

Units sold / yr: 4K–5K; avg 100–250/product
Revenue / yr: $115K–$143K; units × avg price
Conversion rate: 2.9%
Avg BSR: #307
Page quality: 0%
Prime: 100%
Sponsored: 100%
Out of stock: 3.2%
Avg brand age: 45 months
Avg seller age: 153 days

Competition & brand share

The top 5 products take 46% of clicks — established leaders, but buyers still shop beyond them.

Brands

21 falling

Sellers

Top-5 brand share

52%

Top 20: 98%

Top-5 click share

46%

Top 20: 84%

Open market

42%

NORSGATEN22%
Vruelia9%
EZ-FLUID8%
puxyblue7%
Alloxity6%
Gas One6%

Demand & seasonality

Weekly Amazon search volume, last 108 weeks — -14.2% search growth over the last 90 days.

Peak months: Jan, Nov, Dec · busiest ÷ quietest = 1.9×

Open Trend

Top gas line search terms

gas hose25K/yr -11.6%1.4% conv.
flexible gas line17K/yr -18.0%1.5% conv.
gas pipe15K/yr -12.0%0.7% conv.
csst gas line 1/211K/yr -21.7%3.0% conv.
1/2 gas line10K/yr -5.5%4.2% conv.
natural gas line12K/yr -13.3%0.9% conv.
csst gas line6K/yr -9.4%0.6% conv.
flexible gas line 1/2 inch7K/yr -24.4%3.9% conv.
flexible propane line4K/yr +9.7%0.4% conv.
underground gas line5K/yr -20.1%0.2% conv.

All search terms

Top gas line 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.

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

1/2 CSST Gas Line for Natural Gas & Propane | Flexible Corrugated Stainless Steel Gas Tubing with PVC Cover Brass Fittings Included | Gas Pipe for Grills Heaters Stoves Generators (33ft)

NORSGATEN$40.224.0★40 rev

CSST Gas Line 37Ft 1/2 Flexible Stainless Steel Propane Hose

Vruelia$39.314.4★124 rev

48 Flex Gas Line Gas Dryer Connector Kit Stove/Water Heater/Dryer Gas Line with Connectors 1/2 MIP 1/2FIP 3/4MIP 5/8 in.OD(1/2 in. IDCoated Corrugated Stainless Steel Tubing 15/16-16UN Nut

Alloxity$22.434.5★222 rev

EZ-Fluid 24 Stainless Steel Corrugated Yellow Epoxy Coated 1/2 MIP x 1/2 FIP x 24 (3/8ID) Flex Gas Flexible Line Natural Gas Connector Hose Supply Line For Gas Pipe Water Heater Range Dryer Stove

EZ-FLUID$17.844.7★386 rev

CALPOSE 15 Feet 1/2 inch ID Natural Gas Hose for Outdoor Grill

CALPOSE$35.754.7★639 rev

Newest

by launch date

40FT 1/2 Inch CSST Flexible Gas Line | Corrugated Stainless Steel Tubing Natural Gas Hose with 2 Male | Fittings for Dryer Stove Heater Gas Propane

Acyoyava$37.139 rev

7mo ago

38ft 1/2 CSST Gas Line Kit with Quick-Connect Adapters Flexible Corrugated Stainless Steel Gas Tubing Kit for Underground Rated & Propane Conversion (DIY Cut-to-Fit)

JURPLIX$34.089 rev

7mo ago

Yarzelar 1/2 Inch CSST Gas Line Kit 33FT Corrugated Stainless Steel Flexible Hose for Natural Gas Propane with 2 Male Fittings (33ft 1/2)

Yarzelar$38.3553 rev

10mo ago

CSST Gas Line 37Ft 1/2 Flexible Stainless Steel Propane Hose

Vruelia$39.31124 rev

11mo ago

KAINGA 48 Gas Line Hose for Dryer Gas Stoves Water Heater 1/2 OD Stainless Steel Gas Corrugated Dryer Gas Connector kit with 1/2 FIP & 1/2 MIP Fittings Flexible Dryer Gas Supply line

KAINGA$19.0855 rev

12mo ago

What buyers say about gas line

What buyers praise and complain about, mined from review topics.

What buyers love

Quality-Overall25%

“Excellent product”

Advertised Vs Actual Product15%

“As advertised”

Value For Money13%

“Great deal”

Size-Overall11%

“Good Length”

Fuel Efficiency5%

“Decent fuel line”

Efficiency4%

“It works great”

Assembly/Installation3%

“installed properly so far so good”

Leak-Proof3%

“It doesn't leak”

Ease Of Use2%

“Very easy to work with”

Grilling2%

“Works great on my Jenn-Air grill”

What buyers complain about

Leak-Proof15%

“Its leaking”

Size-Overall13%

“Its too long”

Quality-Overall11%

“Bad quality”

Grilling10%

“Scorching hot grill”

Durability6%

“Quit working after 5 weeks”

Strength3%

“the flex line feels flimsy”

Functionality-Overall3%

“This item DOES NOT WORK - DO NOT ORDER BECAUSE YOU CAN'T EVEN RETURN IT”

Material Quality3%

“Cheap material”

Advertised Vs Actual Product3%

“flex gas line description is wrong”

Pressure2%

“Everything I had burst was at 55psi aka stock LS fuel rail pressure”

Top return reasons

Size-Overall71%

Compatibility-Overall7%

Advertised Vs Actual Product3%

Connectivity-Overall3%

Value For Money2%

Functionality-Overall2%

Leak-Proof2%

Defective Material/Parts2%

Quality-Overall1%

Certifications1%

Common questions

Is gas line profitable to sell on Amazon United States?: The niche generates $126K/yr across 31 tracked products. 0 of 4 products launched in the last 360 days are still selling. 90-day search growth is -14.2%. Flapen's verdict: Worth a look (50/100).
How competitive is the gas line niche?: 21 brands and 28 sellers compete. The top 5 products take 46% of clicks and top 5 brands hold 52% of demand.
What do buyers complain about in gas line?: Top complaints mined from reviews: Leak-Proof, Size-Overall, Quality-Overall. The return rate is 3.3%.
When does demand for gas line peak?: Demand peaks in Jan–Nov–Dec; the busiest month runs 1.9× the quietest.
What does it cost to enter the gas line niche?: Listings span $10.12–$71.57; the average listing price is $28.67 (sweet spot $15–$100). The average incumbent carries 1,035 reviews — the moat a new listing must climb.