Is black extension cord profitable to sell on Amazon United States?

The niche generates $552K/yr across 22 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is +14.7%. Flapen's verdict: Worth a look (57/100).

How competitive is the black extension cord niche?

17 brands and 26 sellers compete. The top 5 products take 54% of clicks and top 5 brands hold 65% of demand.

What do buyers complain about in black extension cord?

Top complaints mined from reviews: Durability, Quality-Overall, Functionality-Overall. The return rate is 1.5%.

When does demand for black extension cord peak?

Demand peaks in Nov; the busiest month runs 1.6× the quietest.

What does it cost to enter the black extension cord niche?

Listings span $5.57–$34.78; the average listing price is $12.52 (sweet spot $15–$100). The average incumbent carries 13,251 reviews — the moat a new listing must climb.

black extension cord

Worth a look

Shows searches that convert (11.9% search→purchase), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.

Conversion

Great11.9%

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

Returns

Great1.5%

return rate — above 6% kills the launch gate

Price range

Good$5.57–$34.78

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

Brand share

Good65%

top-5 brand share — brands hold most of the demand

Market size

Good$552K

$552K/yr · 372K searches

Avg price

Good$12.52

avg listing price — sweet spot $15–$100

Competition

Good54%

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

Growth

Okay+14.7%

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

Review moat

Bad13,251.27

avg incumbent reviews — the moat a new listing must climb

Quality gap

Bad4.8★

avg incumbent rating — lower means beatable quality

According to Flapen's Amazon United States niche tracking, black extension cord is a $552K/yr Amazon United States market (372K searches/yr). The top 5 brands hold 65% of demand. Demand peaks in Nov. Verdict: Worth a look — 57/100.

Data updated Jul 17, 2026 · scored weekly · How we score niches

Market data

Units sold / yr: 60K–80K; avg 1,000–1,250/product
Revenue / yr: $751K–$1.0M; units × avg price
Launch success: —; 1 of 1 new (360d)
Conversion rate: 11.9%
Avg BSR: #45
Page quality: 0%
Prime: 100%
Sponsored: 82%
Out of stock: 2.9%
Avg brand age: 54 months
Avg seller age: 189 days

Competition

The top 5 products take 54% of clicks — established leaders, but buyers still shop beyond them.

Brands

17 falling

Sellers

Top-5 brand share

65%

Top 20: 100%

Top-5 click share

54%

Top 20: 98%

Open market

30%

Seeklyze22%
Amazon Basics21%
Skrizcable8%
LitStar7%
HANYCONY7%
Yintar4%

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — +14.7% search growth over the last 90 days.

Peak months: Nov · busiest ÷ quietest = 1.6×

Open Trend

Product shelf

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 22 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

Amazon Basics Extension Cord 10 Ft 3 Prong Outlet Extender Indoor 13 Amps 125V Black

Amazon Basics$7.144.8★61,447 rev

16/3 Black Extension Cord 6 FT Indoor Short Extension Cord for Laptops Coffee Makers Office Home Appliances 3 Prong Small Resistant Cable Flexible 13A 125V 1625W ETL Listed

Seeklyze$6.224.8★5,314 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$10.534.7★5,631 rev

Flat Plug Extension Cord with 3 Outlets - 6Ft Low Profile Indoor 3 Prong Grounded Power Strip for Home Office & Travel - 16 AWG 13A/1625W Black

LitStar$9.934.8★912 rev

Power Strip Surge Protector HANYCONY 5Ft Ultra Thin Flat Extension Cord with Multiple Outlets 8 Widely Outlet Extender 4 USB Ports(2 USB C) 1080J Wall Mount for College Dorm Room Essentials Black

HANYCONY$11.134.8★2,918 rev

Newest

by launch date

15 Ft 3 Outlet Outdoor Extension Cord Waterproof Grounded Extension Cord with Multiple Outlets 16/3 AWG 3 Prong Power Strip for Garden Patio Camping 13A 125V 1625W ETL Listed Black

cismorvex$12.29226 rev

8mo ago

Flat Plug Extension Cord with 3 Outlets - 6Ft Low Profile Indoor 3 Prong Grounded Power Strip for Home Office & Travel - 16 AWG 13A/1625W Black

LitStar$9.93912 rev

1y ago

10Ft Extension Cord with Multiple Outlets Flat Plug Power Strip Surge Protector with 10 Ft Long Cord 8 Outlet 4 USB Ports (2 USB C) Multi Outlet Wall Plug for Office College Dorm Room Essentials

SUPERDANNY$16.196,260 rev

1y ago

16/3 Black Extension Cord 6 FT Indoor Short Extension Cord for Laptops Coffee Makers Office Home Appliances 3 Prong Small Resistant Cable Flexible 13A 125V 1625W ETL Listed

Seeklyze$6.225,314 rev

1y ago

10 FT (2Pack) 13A 1625W 16/3 Black Extension Cord Indoor Extension Cord for Laptops Coffee Makers Office Home Appliances 3 Prong Resistant Cable Flexible 125V ETL Listed

Seeklyze$11.955,314 rev

1y ago

Reviews

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

What buyers love

Quality-Overall21%

“The build quality feels solid”

Advertised Vs Actual Product15%

“As Advertised”

Value For Money11%

“value for money”

Socket/Port/Plug8%

“there are ample ports”

Strength5%

“Good balance of strength and functionality”

Durability4%

“Feels durable”

Charging4%

“Works great, USBC fast charges”

Add-Ons/Attachments4%

“A great extension for any situation”

Ease Of Use4%

“Very handy”

Size-Overall2%

“A good fit”

What buyers complain about

Durability14%

“After 1 month”

Quality-Overall12%

“Bad Quality”

Functionality-Overall8%

“Hard to tell if working”

Socket/Port/Plug5%

“USB outlet not working”

Charging5%

“wasnt successful on a charge”

Heating4%

“gets hot nearly instantly”

Advertised Vs Actual Product3%

“Fault advertisement”

Size-Overall3%

“Doesn't fit”

Value For Money3%

“found another brand cheaper”

Strength3%

“Cheaply made flimsy”

Top return reasons

Size-Overall21%

Add-Ons/Attachments10%

Value For Money10%

Advertised Vs Actual Product8%

Functionality-Overall8%

Socket/Port/Plug7%

Compatibility-Overall5%

Quality-Overall4%

Defective Material/Parts3%

Thin2%

Common questions

Is black extension cord profitable to sell on Amazon United States?: The niche generates $552K/yr across 22 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is +14.7%. Flapen's verdict: Worth a look (57/100).
How competitive is the black extension cord niche?: 17 brands and 26 sellers compete. The top 5 products take 54% of clicks and top 5 brands hold 65% of demand.
What do buyers complain about in black extension cord?: Top complaints mined from reviews: Durability, Quality-Overall, Functionality-Overall. The return rate is 1.5%.
When does demand for black extension cord peak?: Demand peaks in Nov; the busiest month runs 1.6× the quietest.
What does it cost to enter the black extension cord niche?: Listings span $5.57–$34.78; the average listing price is $12.52 (sweet spot $15–$100). The average incumbent carries 13,251 reviews — the moat a new listing must climb.

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black extension cord

Market data

Competition

Demand & seasonality

Product shelf

Top sellers

Newest

Trending

Reviews

What buyers love

What buyers complain about

Top return reasons

Common questions

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