Is l14-30r profitable to sell on Amazon United States?

The niche generates $77K/yr across 30 tracked products. 0 of 1 products launched in the last 360 days are still selling. 90-day search growth is -46.3%. Flapen's verdict: Skip it (45/100).

How competitive is the l14-30r niche?

21 brands and 66 sellers compete. The top 5 products take 53% of clicks and top 5 brands hold 69% of demand.

What do buyers complain about in l14-30r?

Top complaints mined from reviews: Quality-Overall, Mounting, Durability. The return rate is 2.6%.

When does demand for l14-30r peak?

Demand peaks in Jan–Oct–Nov; the busiest month runs 2.8× the quietest.

What does it cost to enter the l14-30r niche?

Listings span $6.89–$81.62; the average listing price is $25.98 (sweet spot $15–$100). The average incumbent carries 557 reviews — the moat a new listing must climb.

l14-30r

Skip it

Soft demand (-46.3% this quarter) — this niche doesn't clear our bar today.

Avg price

Incredible$25.98

avg listing price — sweet spot $15–$100

Price range

Great$6.89–$81.62

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

Review moat

Good556.8

avg incumbent reviews — the moat a new listing must climb

Conversion

Good6.6%

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

Brand share

Good69%

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

Returns

Good2.6%

return rate — above 5% kills the launch gate

Competition

Good53%

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

Market size

Bad$77K

$77K/yr · 45K searches

Quality gap

Bad4.7★

avg incumbent rating — lower means beatable quality

Growth

Bad-46.3%

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

According to Flapen's Amazon United States niche tracking, l14-30r is a $77K/yr Amazon United States market (45K searches/yr). The top 5 brands hold 69% of demand. Demand peaks in Jan–Oct–Nov. Verdict: Skip it — 45/100.

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

l14-30r market data

Units sold / yr: 3K–4K; avg 100–250/product
Revenue / yr: $78K–$104K; units × avg price
Conversion rate: 6.6%
Avg BSR: #109
Page quality: 0%
Prime: 100%
Sponsored: 90%
Out of stock: 3.4%
Avg brand age: 58 months
Avg seller age: 163 days

Competition & brand share

The top 5 products take 53% of clicks — established leaders, but buyers still shop beyond them.

Brands

21 falling

Sellers

Top-5 brand share

69%

Top 20: 100%

Top-5 click share

53%

Top 20: 90%

Open market

28%

ELEGRP35%
Leviton16%
STARELO8%
RVINGPRO5%
Nilight5%
AIDA4%

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -46.3% search growth over the last 90 days.

Peak months: Jan, Oct, Nov · busiest ÷ quietest = 2.8×

Open Trend

Top l14-30r search terms

l14-30r27K/yr -42.5%5.6% conv.
nema l14-30r9K/yr -36.6%4.6% conv.
l14-30r receptacle6K/yr -69.2%5.2% conv.
l14 30r2K/yr -61.2%4.3% conv.

All search terms

Top l14-30r 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

ELEGRP NEMA L14-30R Flush Mounting Locking Receptacle Twist Lock Socket/Outlet for Generator 30 Amp 125/250V 3 Pole 4 Wire Grounding Industrial Grade Heavy Duty UL Listed (1 Pack Black)

ELEGRP$9.694.7★498 rev

ELEGRP NEMA L14-30R Locking Connector Generator Twist Lock Adapter Female Connector 30 Amp 125/250V 3 Pole 4 Wire Grounding Industrial Grade Heavy Duty UL Listed (1 Pack Black/White)

ELEGRP$11.814.7★714 rev

Leviton 30 Amp 125/250 Volt Flush Mounting Locking Receptacle Industrial Grade Grounding V-0-MAX 2710 Black

Leviton$18.634.8★625 rev

STARELO 30 Amp Locking Female Plug Box NEMA L14-30C Generator Twist Lock Adapter Female Connector 125/250 Volt Outdoor dustproof and Weatherproof for generators Welding Machines etc.ETL Listed.

STARELO$25.634.6★421 rev

Nilight 30Amp L14-30P L14-30R Male Female Locking Plug and Connector Generator Twist Lock Plugs Adapter 125/250V ETL Listed Industrial Grade Heavy Duty for RV Camper Caravan Trailer

Nilight$14.814.6★860 rev

Newest

by launch date

Yomiuwo 1 Pack NEMA L1430R Flush Mounting Locking Receptacle 30 Amp Twist Lock L1430 Outlet 3-Pole 4-Wire 125/250V L1430R Plug Compatible Industrial L14 30R Receptacle UL Listed E309821

Yomiuwo$9.9935 rev

11mo ago

MECMO NEMA L14-30R Generator Locking Connector L14-30C Twist Lock 30 Amp 4 Prong Generator Female Plug Replacement 125/250 Volt 3 Pole 4 Wire Grounding Industrial-Strength Heavy Duty ETL Listed

MECMO$11.4719 rev

1y ago

Yomiuwo 5 Pack L14-30R Receptacle Outlet 30 Amp 125/250V L14-30R Twist Lock Socket/Outlet for Generator 3 Pole 4 Wire Grounding Industrial Grade Heavy Duty UL Listed Black

Yomiuwo$29.6716 rev

1y ago

HIITIO 30 Amp NEMA L14-30R Power Outlet Box 125/250 Volt Heavy Duty Lockable Weatherproof Outdoor Electrical Panel Outdoor Receptacle for EV Generator Trailer Motorhome ETL Listed HDS2-011

HIITIO$36.247 rev

1y ago

30A NEMA L14-30R Flanged Outlet 250V Generator Plug Female Locking Intlet Wall Receptacle 4 Prong Socket with Cover Industrial Grade Replacement for Transfer Switches ETL Listed

HYDUUU$17.833 rev

1y ago

What buyers say about l14-30r

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

What buyers love

Advertised Vs Actual Product22%

“Exactly what I needed”

Quality-Overall22%

“Good quality”

Value For Money12%

“Good deal”

Socket/Port/Plug9%

“Plug seems well made & sturdy”

Assembly/Installation6%

“The box works as expected with a clean installation”

Strength4%

“The construction is robust and solid”

Durability3%

“durability and ease”

Connectivity-Overall2%

“Well, made easy to connect good price”

Efficiency2%

“Works great”

Ease Of Use2%

“Easy to use”

What buyers complain about

Quality-Overall20%

“this is too cheaply made”

Mounting12%

“The terminal screw tightening mechanism is poor quality”

Durability8%

“Broke”

Design-Overall6%

“Really bad engineering”

Advertised Vs Actual Product6%

“They can falsely claim listing on here”

Instructions/User Manual/Troubleshooting6%

“manual transfer switches are cheap”

Compatibility-Overall6%

“Not compatible with Reliant manual transfer switch”

Assembly/Installation4%

“Not much space behind the plug inside the box for the 10AWG wire so a bit difficult to get it all together”

Size-Overall4%

“I used SO #8-4 rubber cord Cord would not fit into plug housing without removing material”

Certifications3%

“Even though it states UL I doubt it”

Top return reasons

Size-Overall28%

Compatibility-Overall16%

Socket/Port/Plug10%

Functionality-Overall7%

Advertised Vs Actual Product6%

Connectivity-Overall6%

Value For Money6%

Defective Material/Parts5%

Quality-Overall4%

Assembly/Installation2%

Common questions

Is l14-30r profitable to sell on Amazon United States?: The niche generates $77K/yr across 30 tracked products. 0 of 1 products launched in the last 360 days are still selling. 90-day search growth is -46.3%. Flapen's verdict: Skip it (45/100).
How competitive is the l14-30r niche?: 21 brands and 66 sellers compete. The top 5 products take 53% of clicks and top 5 brands hold 69% of demand.
What do buyers complain about in l14-30r?: Top complaints mined from reviews: Quality-Overall, Mounting, Durability. The return rate is 2.6%.
When does demand for l14-30r peak?: Demand peaks in Jan–Oct–Nov; the busiest month runs 2.8× the quietest.
What does it cost to enter the l14-30r niche?: Listings span $6.89–$81.62; the average listing price is $25.98 (sweet spot $15–$100). The average incumbent carries 557 reviews — the moat a new listing must climb.

l14-30r

l14-30r market data

Competition & brand share

Demand & seasonality

Top l14-30r search terms

Top l14-30r products on Amazon

Top sellers

Newest

Trending

What buyers say about l14-30r

What buyers love

What buyers complain about

Top return reasons

Common questions

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