---
title: "L14-30p — $91K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/tools-home-improvement/l14-30p"
last_updated: "2026-08-09T04:27:52.980Z"
locale: en
meta:
description: "Niche score 38/100 · $91K/yr market · 82K searches/yr · $15.50 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 38/100 · $91K/yr market · 82K searches/yr · $15.50 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "L14-30p — $91K/yr Amazon US Niche (2026) - Flapen"
---
# **l14-30p**
**Skip it**
Soft demand (-55.6% this quarter) — this niche doesn't clear our bar today.
Market size 23Growth 0Conversion 76Competition 20Returns 68Price range 78Avg price 76Brand share 39Review moat 68Quality gap 18
**Price range**
**Great****$6.21–$48.21**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Conversion**
**Great****7.2%**
search→purchase rate — share of searches ending in a sale
**Avg price**
**Great****$15.50**
avg listing price — sweet spot $15–$100
**Review moat**
**Good****787.54**
avg incumbent reviews — the moat a new listing must climb
**Returns**
**Good****2.3%**
return rate — above 5% kills the launch gate
**Brand share**
**Okay****82%**
top-5 brand share — brands hold most of the demand
**Market size**
**Bad****$91K**
$91K/yr · 82K searches
**Competition**
**Bad****75%**
top-5 click share — a locked-up shelf
**Quality gap**
**Bad****4.7★**
avg incumbent rating — lower means beatable quality
**Growth**
**Bad****-55.6%**
90-day search growth — must beat 0% to launch
According to Flapen's Amazon United States niche tracking, l14-30p is a $91K/yr Amazon United States market (82K searches/yr). The top 5 brands hold 82% of demand. Demand peaks in Jan–Oct. Verdict: Skip it — 38/100.
Data updated Jul 27, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **l14-30p market data**
- **Units sold / yr**
- **6K–8K**
- avg 250–500/product
- **Revenue / yr**
- **$93K–$124K**
- units × avg price
- **Conversion rate**
- **7.2%**
- **Avg BSR**
- **#138**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **85%**
- **Out of stock**
- **0.4%**
- **Avg brand age**
- **58 months**
- **Avg seller age**
- **173 days**
## **Competition & brand share**
The top 5 products capture 75% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**11 **▼falling
**Sellers**
**34**
**Top-5 brand share**
**82%**
Top 20: 100%
**Top-5 click share**
**75%**
Top 20: 100%
**Open market**
**14%**
- ELEGRP43% - ENERLITES15% - Leviton13% - MECMO6% - Nilight5% - AIDA5% - Open — no brand owns it (5 brands, 14%)
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -55.6% search growth over the last 90 days.
12K8KSpike '24Spike '25Prime Day '25Spike '26Prime Day '26 seasonSepDecMarJunAugNovMarMay
Peak months: Jan, Oct · busiest ÷ quietest = 3.2×
[**Open Trend **](https://flapen.com/research/us/tools-home-improvement/l14-30p/trend)
## **Top l14-30p search terms**
- **l14-30p**28K/yr-57.5%6.2% conv. - **l14-30**13K/yr-48.2%2.8% conv. - **nema l14-30p**10K/yr-45.4%4.1% conv. - **nema l14-30**7K/yr-49.5%3.8% conv. - **4 prong generator plug**6K/yr-56.5%1.4% conv. - **l14-30 plug**6K/yr-65.9%5.5% conv. - **4 prong 30 amp plug**4K/yr-58.8%1.1% conv. - **4 prong twist lock generator plug**4K/yr-68.8%1.4% conv. - **l14-30r plug**3K/yr-60.8%4.3% conv. [**All search terms **](https://flapen.com/research/us/tools-home-improvement/l14-30p/search-terms)
## **Top l14-30p 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.
0%10%$9K20%$18K30%$27K40%$37K1101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 13 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**ELEGRP NEMA L14-30P Locking Plug Generator Twist Lock Adapter Male Plug 30 Amp 125/250V 3 Pole 4 Wire Grounding Industrial Grade Heavy Duty UL Listed (1 Pack Black/White)**ELEGRP**$9.77**4.7★1,483 rev](https://www.amazon.com/dp/B08CXQSYBD) [2**ENERLITES NEMA L14-30P Locking Plug Connector for Generator Twist Lock Male Plug 30 Amp 125/250 Volt 3 Pole 4 Wire Grounding Industrial Grade Heavy Duty UL Listed 66470-BK Black**ENERLITES**$9.68**4.7★2,284 rev](https://www.amazon.com/dp/B01E4BLIGK) [3**Leviton 30 Amp 125/250 Volt NEMA L14-30P 3P 4W Locking Plug Industrial Grade Grounding 2711 Black-White**Leviton**$16.30**4.8★1,908 rev](https://www.amazon.com/dp/B00002NATY) [4**MECMO 30Amp L14-30P Generator Locking Plug UL Listed Twist Lock 30 Amp 4 Prong Generator Male Plug Connector 125/250 Volt 3 Pole 4 Wire Grounding Industrial-Strength Heavy Duty**MECMO**$11.71**4.7★28 rev](https://www.amazon.com/dp/B0FHBBC8CT) [5**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**$14.81**4.6★860 rev](https://www.amazon.com/dp/B0CQ4R9482)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**MECMO 30Amp L14-30P Generator Locking Plug UL Listed Twist Lock 30 Amp 4 Prong Generator Male Plug Connector 125/250 Volt 3 Pole 4 Wire Grounding Industrial-Strength Heavy Duty**MECMO**$11.71**28 rev1y ago](https://www.amazon.com/dp/B0FHBBC8CT) [**HIITIO NEMA L14-30P Locking Plug AC150V Locking Plug Connector for Generator Grounding Electrical Replacement Industrial Grade UL Listed L14-30P**HIITIO**$6.21**8 rev1y ago](https://www.amazon.com/dp/B0F6BZXR1X) [**AIDA NEMA L14-30P & NEMA L14-30R Locking Plug and Connector Twist Generator Male and Female Adapter 30 Amp 125/250 Volt 3-Pole 4-Wire Grounding Industrial-Strength Heavy Duty UL Listed**AIDA**$19.52**75 rev2y ago](https://www.amazon.com/dp/B0CSJWYW9L) [**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**$14.81**860 rev2y ago](https://www.amazon.com/dp/B0CQ4R9482) [**PlugSaf 25FT 30 Amp Generator Extension Cord 4 Prong NEMA L14-30P/L14-30R 10 Gauge STW 125/250V Twist Lock Generator Cord Heavy Duty Black ETL Listed**PlugSaf**$48.21**583 rev3y ago](https://www.amazon.com/dp/B0C23X13P8)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**HIITIO NEMA L14-30P Locking Plug AC150V Locking Plug Connector for Generator Grounding Electrical Replacement Industrial Grade UL Listed L14-30P**HIITIO**$6.21**5.0★**▲ 201%**](https://www.amazon.com/dp/B0F6BZXR1X) [**MECMO 30Amp L14-30P Generator Locking Plug UL Listed Twist Lock 30 Amp 4 Prong Generator Male Plug Connector 125/250 Volt 3 Pole 4 Wire Grounding Industrial-Strength Heavy Duty**MECMO**$11.71**4.7★**▲ 162%**](https://www.amazon.com/dp/B0FHBBC8CT) [**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**$14.81**4.6★**▲ 33%**](https://www.amazon.com/dp/B0CQ4R9482) [**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**$9.69**4.7★**▲ 28%**](https://www.amazon.com/dp/B08CXG2PQS) [**ELEGRP NEMA L14-30P Locking Plug Generator Twist Lock Adapter Male Plug 30 Amp 125/250V 3 Pole 4 Wire Grounding Industrial Grade Heavy Duty UL Listed (1 Pack Black/White)**ELEGRP**$9.77**4.7★**— 6%**](https://www.amazon.com/dp/B08CXQSYBD)
**~~View all trending →~~**
## **What buyers say about l14-30p**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**26%
*“Good quality product”*
**Advertised Vs Actual Product**21%
*“Just what I needed”*
**Value For Money**11%
*“great product and reasonable price”*
**Socket/Port/Plug**10%
*“Well made connector”*
**Assembly/Installation**7%
*“The box works as expected with a clean installation”*
**Efficiency**3%
*“Works great”*
**Size-Overall**3%
*“all fit great”*
**Connectivity-Overall**3%
*“Well, made easy to connect good price”*
**Durability**3%
*“Easy to use and durable”*
**Strength**3%
*“The construction feels solid”*
### **What buyers complain about **
**Quality-Overall**21%
*“this is too cheaply made”*
**Size-Overall**10%
*“I used SO #8-4 rubber cord Cord would not fit into plug housing without removing material”*
**Design-Overall**8%
*“Really bad engineering”*
**Durability**8%
*“Broke”*
**Compatibility-Overall**8%
*“Not compatible with Reliant manual transfer switch”*
**Mounting**8%
*“Box decent, missing screws”*
**Advertised Vs Actual Product**8%
*“They can falsely claim listing on here”*
**Certifications**4%
*“Even though it states UL I doubt it”*
**Water Resistance**3%
*“Not water proof”*
**Assembly/Installation**2%
*“removed temporary screws”*
### **Top return reasons **
**Size-Overall**29%
**Compatibility-Overall**21%
**Socket/Port/Plug**11%
**Value For Money**7%
**Defective Material/Parts**5%
**Quality-Overall**5%
**Functionality-Overall**5%
**Advertised Vs Actual Product**4%
**Connectivity-Overall**4%
**Assembly/Installation**2%
## **Common questions**
- **Is l14-30p profitable to sell on Amazon United States?**
- The niche generates $91K/yr across 13 tracked products. 90-day search growth is -55.6%. Flapen's verdict: Skip it (38/100).
- **How competitive is the l14-30p niche?**
- 11 brands and 34 sellers compete. The top 5 products take 75% of clicks and top 5 brands hold 82% of demand.
- **What do buyers complain about in l14-30p?**
- Top complaints mined from reviews: Quality-Overall, Size-Overall, Design-Overall. The return rate is 2.3%.
- **When does demand for l14-30p peak?**
- Demand peaks in Jan–Oct; the busiest month runs 3.2× the quietest.
- **What does it cost to enter the l14-30p niche?**
- Listings span $6.21–$48.21; the average listing price is $15.50 (sweet spot $15–$100). The average incumbent carries 788 reviews — the moat a new listing must climb.
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