Is nema 14-30 extension cord profitable to sell on Amazon United States?

The niche generates $100K/yr across 22 tracked products. 0 of 3 products launched in the last 360 days are still selling. 90-day search growth is +2.5%. Flapen's verdict: Skip it (46/100).

How competitive is the nema 14-30 extension cord niche?

14 brands and 20 sellers compete. The top 5 products take 48% of clicks and top 5 brands hold 66% of demand.

What do buyers complain about in nema 14-30 extension cord?

Top complaints mined from reviews: Functionality-Overall, Durability, Quality-Overall. The return rate is 7.2% — above our launch gate.

When does demand for nema 14-30 extension cord peak?

Demand is steady year-round — the busiest month runs 1.3× the quietest.

What does it cost to enter the nema 14-30 extension cord niche?

Listings span $19.41–$118.85; the average listing price is $53.71 (sweet spot $15–$100). The average incumbent carries 334 reviews — the moat a new listing must climb.

nema 14-30 extension cord

Skip it

Strong incumbent ratings (4.7★) — this niche doesn't clear our bar today.

Avg price

Great$53.71

avg listing price — sweet spot $15–$100

Review moat

Great333.64

avg incumbent reviews — the moat a new listing must climb

Price range

Great$19.41–$118.85

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

Brand share

Good66%

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

Competition

Good48%

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

Conversion

Good4.8%

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

Growth

Okay+2.5%

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

Market size

Okay$100K

$100K/yr · 39K searches

Returns

Bad7.2%

return rate — above 5% kills the launch gate

Quality gap

Bad4.7★

avg incumbent rating — lower means beatable quality

Signals No Dominant Brand Low Review Barrier High Returns High Price

According to Flapen's Amazon United States niche tracking, nema 14-30 extension cord is a $100K/yr Amazon United States market (39K searches/yr). The top 5 brands hold 66% of demand. Verdict: Skip it — 46/100.

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

nema 14-30 extension cord market data

Units sold / yr: 2K–2K; avg 0–100/product
Revenue / yr: $81K–$107K; units × avg price
Conversion rate: 4.8%
Avg BSR: #496
Page quality: 0%
Prime: 100%
Sponsored: 91%
Out of stock: 7.2%
Avg brand age: 49 months
Avg seller age: 196 days

Competition & brand share

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

Brands

14 falling

Sellers

Top-5 brand share

66%

Top 20: 100%

Top-5 click share

48%

Top 20: 98%

Open market

25%

Elecan16%
Deeklify15%
islewire13%
PlugSaf13%
RVMATE9%
Kanayu9%

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — +2.5% search growth over the last 90 days.

No pronounced peak months · busiest ÷ quietest = 1.3×

Open Trend

Top nema 14-30 extension cord search terms

nema 14-30 extension cord11K/yr +25.0%2.8% conv.
dryer extension cord 4 prong7K/yr -6.6%5.9% conv.
4 prong dryer extension cord7K/yr -8.9%8.8% conv.
14-30 extension cord7K/yr +6.0%3.9% conv.
4 prong extension cord6K/yr -13.3%2.8% conv.

All search terms

Top nema 14-30 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 22 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

Elecan Dryer EV Extension Cord 10 FT 4 Prong 30 Amp NEMA 14-30P to 14-30R Extension Cord Cable for Dryer Power Extension and Level 2 EV Charging Tesla Heavy Waterproof 10AWG 125/250V-ETL-Blue-10FT

Elecan$35.894.8★99 rev

RVMATE 4 Prong Dryer Extension Cord 10 Feet 30 Amp NEMA 14-30P to 14-30R 125V/250V Waterproof PVC Jacket Perfect for Dryer Power Extension ETL Listed

RVMATE$34.704.8★825 rev

Deeklify 25 FT 4 Prong Dryer Extension Cord Outdoor Black 30 AMP 10/4 Gauge Heavy Duty NEMA 14-30P to 14-30R Waterproof SRDT Jacket ETL Listed for 4 Prong Dryers

Deeklify$58.604.9★136 rev

Kanayu 6.6 FT 4 Prong Dryer/EV Extension Cord 30 Amp NEMA 14-30P to 14-30R for Level 2 EV Charging and Dryer Power Flexible Cable STW 10 Gauge Cord with Grip Handle ETL Listed (Blue and Black)

Kanayu$37.674.8★133 rev

Rophor Dryer Extension Cord 4 Prong 30 Amp NEMA 14-30P to 14-30R Extension Cord for Dryer Power Extension and EV Charging 125V/250V 10 Feet

Rophor$38.454.7★416 rev

Newest

by launch date

Kanayu 6.6 FT 4 Prong Dryer/EV Extension Cord 30 Amp NEMA 14-30P to 14-30R for Level 2 EV Charging and Dryer Power Flexible Cable STW 10 Gauge Cord with Grip Handle ETL Listed (Black)

Kanayu$39.34133 rev

9mo ago

Deeklify 25 FT 4 Prong Dryer Extension Cord Outdoor Black 30 AMP 10/4 Gauge Heavy Duty NEMA 14-30P to 14-30R Waterproof SRDT Jacket ETL Listed for 4 Prong Dryers

Deeklify$58.60136 rev

10mo ago

Deeklify 10 FT 4 Prong Dryer Extension Cord Outdoor Black 30 AMP 10/4 Gauge Heavy Duty NEMA 14-30P to 14-30R Waterproof SRDT Jacket ETL Listed for 4 Prong Dryers

Deeklify$33.55136 rev

10mo ago

VEVOR 50 FT 30 Amp Dryer Extension Cord 4-Prong NEMA 14-30P to 14-30R 10AWG STW Pure Copper 125/250V 7500W Heavy Duty Power Cable for EV Charging Laundry Room Home Garage with Storage Bag

VEVOR$86.3221 rev

1y ago

Kanayu 6.6 FT 4 Prong Dryer/EV Extension Cord 30 Amp NEMA 14-30P to 14-30R for Level 2 EV Charging and Dryer Power Flexible Cable STW 10 Gauge Cord with Grip Handle ETL Listed (Blue and Black)

Kanayu$37.67133 rev

1y ago

What buyers say about nema 14-30 extension cord

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

What buyers love

Quality-Overall25%

“Excellent quality”

Advertised Vs Actual Product21%

“As advertised”

Value For Money6%

“Good value”

Size-Overall5%

“Perfect fit”

Socket/Port/Plug5%

“The flat plug is a nice feature”

Ease Of Use4%

“Easy to use”

Strength4%

“Great build”

Weight Heavy4%

“This is heavy duty”

Charging3%

“the charging speed is fine”

Connectivity-Overall3%

“it plugs in easily”

What buyers complain about

Functionality-Overall21%

“Didnt work”

Durability15%

“Stop working within the first month of use”

Quality-Overall10%

“NOT well made”

Size-Overall6%

“Too short”

Advertised Vs Actual Product6%

“False advertisement”

Charging4%

“Also note you will not be able to charge”

Ease Of Use3%

“I did not get to use it”

Thickness3%

“The cord is thick”

Flammable2%

“This is a fire hazard”

Defective Material/Parts2%

“Defective Item”

Top return reasons

Size-Overall22%

Compatibility-Overall22%

Socket/Port/Plug10%

Add-Ons/Attachments8%