Is 30 ft extension cord profitable to sell on Amazon United States?

The niche generates $359K/yr across 28 tracked products. 4 of 5 products launched in the last 360 days are still selling. 90-day search growth is +33.1%. Flapen's verdict: Worth a look (61/100).

How competitive is the 30 ft extension cord niche?

22 brands and 23 sellers compete. The top 5 products take 48% of clicks and top 5 brands hold 58% of demand.

What do buyers complain about in 30 ft extension cord?

Top complaints mined from reviews: Quality-Overall, Durability, Heating. The return rate is 2.2%.

When does demand for 30 ft extension cord peak?

Demand peaks in Nov–Dec; the busiest month runs 2.0× the quietest.

What does it cost to enter the 30 ft extension cord niche?

Listings span $7.82–$36.19; the average listing price is $21.26 (sweet spot $15–$100). The average incumbent carries 10,858 reviews — the moat a new listing must climb.

30 ft extension cord

Worth a look

Shows searches that convert (11.7% search→purchase), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.

Conversion

Great11.7%

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

Avg price

Great$21.26

avg listing price — sweet spot $15–$100

Brand share

Great58%

top-5 brand share — no brand owns this niche

Price range

Great$7.82–$36.19

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

Returns

Good2.2%

return rate — above 5% kills the launch gate

Competition

Good48%

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

Growth

Good+33.1%

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

Market size

Good$359K

$359K/yr · 145K searches

Review moat

Bad10,858.32

avg incumbent reviews — the moat a new listing must climb

Quality gap

Bad4.8★

avg incumbent rating — lower means beatable quality

Signals No Dominant Brand Low Review Barrier

According to Flapen's Amazon United States niche tracking, 30 ft extension cord is a $359K/yr Amazon United States market (145K searches/yr). The top 5 brands hold 58% of demand. Demand peaks in Nov–Dec. Verdict: Worth a look — 61/100.

Data updated Jul 27, 2026 · scored weekly · How we score niches

30 ft extension cord market data

Units sold / yr: 15K–20K; avg 250–500/product
Revenue / yr: $319K–$425K; units × avg price
Conversion rate: 11.7%
Avg BSR: #140
Page quality: 0%
Prime: 96%
Sponsored: 79%
Out of stock: 3.6%
Avg brand age: 50 months
Avg seller age: 183 days

Competition & brand share

The top 5 products take 48% of clicks — established leaders, but buyers still shop beyond them.

Brands

22 falling

Sellers

Top-5 brand share

58%

Top 20: 99%

Top-5 click share

48%

Top 20: 93%

Open market

35%

Tiffcofio15%
Skrizcable14%
Amazon Basics12%
GE10%
Elecan8%
Conable7%

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — +33.1% search growth over the last 90 days.

Peak months: Nov, Dec · busiest ÷ quietest = 2.0×

Open Trend

Top 30 ft extension cord search terms

30 ft extension cord38K/yr +35.5%8.8% conv.
30ft extension cord21K/yr +15.2%8.3% conv.
30 foot extension cord19K/yr +33.7%8.6% conv.
extension cord 30 ft13K/yr +21.3%10.3% conv.
30 extension cord9K/yr +52.2%9.3% conv.
30 ft outdoor extension cord7K/yr +109.6%11.0% conv.
extension cord 30+ ft7K/yr +1.6%10.3% conv.
35 ft extension cord6K/yr +8.8%6.8% conv.
30 feet extension cord5K/yr +19.2%8.1% conv.
30 foot outdoor extension cord5K/yr +100.2%12.1% conv.

All search terms

Top 30 ft extension cord 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

TiFFCOFiO Indoor Outdoor Extension Cord Waterproof 30 Feet 3 Prong Power Cord for Home and Garden 16 AWG 13A/1625W ETL Listed (30 FT)

Tiffcofio$19.374.7★58 rev

GE Outdoor Extension Cord 40 Ft Grounded Heavy Duty Extension Cord 16AWG 3 Prong Outdoor Extension Cord ETL Listed Green 81601

GE$16.484.8★2,473 rev

Amazon Basics Extension Cord 25 Ft 3 Prong Outlet Extender Indoor Power Cord 13 Amps 125V Black

Amazon Basics$11.134.8★61,533 rev

Skrizcable 16/3 25 FT Outdoor Extension Cord Waterproof Weatherproof & Flame Retardant Black 3 Prong Power Cord Outside for Lawn & Garden 13 Amps 1625 Watts 125 VAC 16AWG SJTW ETL Listed

Skrizcable$10.584.7★5,828 rev

Outdoor Extension Cord 30 Ft with 3 Outlets 14/3 SJTW 3 Prong Grounded Power Cord 14 Gauge 14AWG Heavy Duty Power Cable ETL Listed 15 Amp 125 V 1875 W-Multiple Outlets for Indoor/Outdoor-Black

Elecan$30.474.8★831 rev

Newest

by launch date

16AWG Black 30FT Outdoor Extension Cord Heavy Duty Waterproof & Cold-Resistant Ideal for Lawn Mowers Power Tools Outdoor Lights ETL Listed 3 Prong Copper Conductor 13A 125V 1625W

Seeklyze$19.535,386 rev

3mo ago

16/3 13A 125V 1625W 30 FT Outdoor Extension Cord Waterproof Weatherproof & Flame Retardant White 3 Prong Power Cord Outside for Lawn & Garden 125 VAC 16AWG SJTW ETL Listed

Skrizcable$23.155,828 rev

7mo ago

16/3 13A 125V 1625W 30 FT Outdoor Extension Cord Waterproof Weatherproof & Flame Retardant Black 3 Prong Power Cord Outside for Lawn & Garden 125 VAC 16AWG SJTW ETL Listed

Skrizcable$30.625,828 rev

7mo ago

TiFFCOFiO Indoor Outdoor Extension Cord Waterproof 30 Feet 3 Prong Power Cord for Home and Garden 16 AWG 13A/1625W ETL Listed (30 FT)

Tiffcofio$19.3758 rev

8mo ago

35 Ft 13A 1625W 16AWG White Indoor Outdoor Extension Cord Waterproof Extension Cord with 3 Prong Grounded Plug Flexible Weatherproof Power Cable SJTW

Vockjour$18.15108 rev

9mo ago

What buyers say about 30 ft extension cord

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

What buyers love

Quality-Overall27%

“Excellent quality”

Advertised Vs Actual Product16%

“As Advertised”

Value For Money14%

“Good value for money”

Durability7%

“Feels durable”

Strength7%

“Good sturdy cord”

Add-Ons/Attachments4%

“A great extension for any situation”

Weight Heavy4%

“Heavy duty”

Ease Of Use3%

“Easy to use”

Efficiency2%

“Works great”

Flexibility2%

“it is indeed flexible”

What buyers complain about

Quality-Overall29%

“Garbage quality”

Durability9%

“Stopped working after a couple weeks”

Heating8%

“Not good - I connected this extension cord with a small heater”

Size-Overall5%

“Connector is overly wide”

Ease Of Use4%

“this makes it difficult to use”

Strength4%

“The cord feels fragile”

Thickness3%

“Thin and weak”

Value For Money3%

“I probably could have found a cheaper one in a store”

Charging3%

“caused charging issues”

Water Resistance2%

“Not waterproof”

Top return reasons

Size-Overall22%

Add-Ons/Attachments16%

Value For Money11%

Compatibility-Overall8%

Advertised Vs Actual Product8%

Functionality-Overall6%

Quality-Overall4%

Thin4%

Socket/Port/Plug3%

Defective Material/Parts2%

Common questions

Is 30 ft extension cord profitable to sell on Amazon United States?: The niche generates $359K/yr across 28 tracked products. 4 of 5 products launched in the last 360 days are still selling. 90-day search growth is +33.1%. Flapen's verdict: Worth a look (61/100).
How competitive is the 30 ft extension cord niche?: 22 brands and 23 sellers compete. The top 5 products take 48% of clicks and top 5 brands hold 58% of demand.
What do buyers complain about in 30 ft extension cord?: Top complaints mined from reviews: Quality-Overall, Durability, Heating. The return rate is 2.2%.
When does demand for 30 ft extension cord peak?: Demand peaks in Nov–Dec; the busiest month runs 2.0× the quietest.
What does it cost to enter the 30 ft extension cord niche?: Listings span $7.82–$36.19; the average listing price is $21.26 (sweet spot $15–$100). The average incumbent carries 10,858 reviews — the moat a new listing must climb.