Is l5-30r profitable to sell on Amazon United States?

The niche generates $72K/yr across 75 tracked products. 6 of 14 products launched in the last 360 days are still selling. 90-day search growth is -17.1%. Flapen's verdict: Worth a look (54/100).

How competitive is the l5-30r niche?

43 brands and 122 sellers compete. The top 5 products take 24% of clicks and top 5 brands hold 50% of demand.

What do buyers complain about in l5-30r?

Top complaints mined from reviews: Size-Overall, Quality-Overall, Defective Material/Parts. The return rate is 3.5%.

When does demand for l5-30r peak?

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

What does it cost to enter the l5-30r niche?

Listings span $6.95–$75.12; the average listing price is $20.23 (sweet spot $15–$100). The average incumbent carries 370 reviews — the moat a new listing must climb.

l5-30r

Worth a look

Shows a fragmented shelf (top 5 take 24% of clicks), but soft demand (-17.1% this quarter) keeps it on the watch list.

Competition

Great24%

top-5 click share — an open shelf

Avg price

Great$20.23

avg listing price — sweet spot $15–$100

Price range

Great$6.95–$75.12

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

Brand share

Great50%

top-5 brand share — no brand owns this niche

Review moat

Great369.83

avg incumbent reviews — the moat a new listing must climb

Conversion

Great7.2%

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

Returns

Okay3.5%

return rate — above 5% kills the launch gate

Quality gap

Bad4.6★

avg incumbent rating — lower means beatable quality

Market size

Bad$72K

$72K/yr · 50K searches

Growth

Bad-17.1%

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

Signals No Dominant Brand

According to Flapen's Amazon United States niche tracking, l5-30r is a $72K/yr Amazon United States market (50K searches/yr). The top 5 brands hold 50% of demand. Demand peaks in Jan. Verdict: Worth a look — 54/100.

Data updated Jul 23, 2026 · scored weekly · How we score niches

l5-30r market data

Units sold / yr: 4K–5K; avg 0–100/product
Revenue / yr: $81K–$101K; units × avg price
Conversion rate: 7.2%
Avg BSR: #483
Page quality: 0%
Prime: 100%
Sponsored: 77%
Out of stock: 3.4%
Avg brand age: 53 months
Avg seller age: 174 days

Competition & brand share

Clicks spread well past the top 5 (24% combined) — an open shelf where new products get seen.

Brands

43 rising

Sellers

122

Top-5 brand share

50%

Top 20: 86%

Top-5 click share

24%

Top 20: 61%

Open market

46%

ELEGRP16%
MECMO16%
ENERLITES7%
Leviton5%
Conable5%
M1A25%

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -17.1% search growth over the last 90 days.

Peak months: Jan · busiest ÷ quietest = 1.6×

Open Trend

Top l5-30r search terms

l5-30r13K/yr -8.5%5.7% conv.
l5-30p13K/yr -26.8%4.8% conv.
l5-30r adapter8K/yr +6.2%5.7% conv.
nema l5-30r5K/yr -17.9%5.7% conv.
nema l5-30p5K/yr -23.8%4.7% conv.
l5-304K/yr -24.4%5.3% conv.
l5-30p adapter3K/yr -34.5%6.2% conv.

All search terms

Top l5-30r 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 L5-30P Locking Plug Generator Twist Lock Adapter Plug 30 Amp 125V 2 Pole 3 Wire Grounding Industrial Grade Heavy Duty UL Listed (1 Pack Black/White)

ELEGRP$8.984.7★561 rev

ENERLITES NEMA L5-30P Locking Plug Connector for Generator Twist Lock Male Plug 30 Amp 125 Volt 2 Pole 3 Wire Grounding Industrial Grade Heavy Duty UL Listed 66450-BK Black

ENERLITES$9.914.7★338 rev

MECMO 30A 125V NEMA L5-30P Generator Locking Plug UL Listed 3 Prong Twist Lock RV Marine Generator Male Plug Connector 30 Amp 125 Volt 2 Pole 3 Wire Grounding Industrial Grade Heavy Duty

MECMO$11.864.1★18 rev

30 Amp to 15/20 Amp Generator Adapter - Locking Cord Nema L5-30P Male to 3X 5-20R Female 1.5 FT Household Outlet Female

M1A2$19.794.7★989 rev

MECMO NEMA L5-30P to TT-30R 30 Amp RV Adapter UL Listed Portable Compact Adaptor 3 Prong 30A 125V Twist Locking Generator Plug L5-30 to TT-30 for 30Amp RV Trailer Camper

MECMO$12.694.7★272 rev

Newest

by launch date

2-Pack Nema L5-30P Locking Plug 30 amp 125 Volt L5 30P Twist Lock Male Plug 2 Pole 3 Wire Industrial Grade Heavy-Duty AC Power Connector ETL CertifiedBlack/White

HUARLPLUG$13.8718 rev

8mo ago

MECMO 30A/125V NEMA L5-30P & L5-30R Generator Locking Plug and Connector 3 Prong Twist Lock RV Marine Male & Female Adapter 30 Amp 125 Volt 2 Pole 3 Wire Grounding Industrial Grade Heavy Duty

MECMO$18.3742 rev

8mo ago

MECMO 30A 125V NEMA L5-30P Generator Locking Plug UL Listed 3 Prong Twist Lock RV Marine Generator Male Plug Connector 30 Amp 125 Volt 2 Pole 3 Wire Grounding Industrial Grade Heavy Duty

MECMO$11.8618 rev

8mo ago

MECMO 30A 125V NEMA L5-30C Generator Locking Connector ETL Listed 3 Prong Twist Lock RV Marine L5-30R Female Adapter Plug 30 Amp 125 Volt 2 Pole 3 Wire Grounding Industrial Grade Heavy Duty

MECMO$11.8020 rev

8mo ago

ELEGRP 30 Amp to 110 RV Adapter NEMA 5-15P to NEMA L5-30R Twist Lock Generator Cord Heavy Duty STW 10/3 AWG 125V Electrical Dogbone Plug Converter for Travel Trailer Camper UL Standard Compliant

ELEGRP$19.1317 rev

10mo ago

What buyers say about l5-30r

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

What buyers love

Quality-Overall25%

“Excellent product”

Advertised Vs Actual Product13%

“As advertised”

Size-Overall9%

“Fit as it should”

Value For Money8%

“Great Value”

Socket/Port/Plug7%

“Pretty good plug for my camper”

Efficiency5%

“Works perfectly”

Durability4%

“It seems very well made and durable and I believe it will last for years”

Assembly/Installation4%

“Easy install”

Ease Of Use3%

“Very easy to use”

Strength3%

“Heavy Duty”

What buyers complain about

Size-Overall15%

“Very shortv”

Quality-Overall12%

“It's garbage”

Defective Material/Parts4%

“Camper parts”

Amplification4%

“Dosnt work on 30 Amp, 115 v RV connectors”

Durability3%

“Every time I used it I was worried it would break. but to be fair, it didn't”

Grip3%

“Does not hold tight”

Certifications3%

“To start, if MECMO really is the manufacturer of these products like this listing says, then neither of these items are legitimately ETL or UL certified”

Instructions/User Manual/Troubleshooting3%

“this is poor documentation”

Assembly/Installation3%

“which makes initial set up a bit confusing”

Heating2%

“severe overheating”

Top return reasons

Size-Overall44%

Compatibility-Overall22%

Connectivity-Overall5%

Socket/Port/Plug5%

Advertised Vs Actual Product4%

Functionality-Overall4%

Value For Money3%

Add-Ons/Attachments2%

Defective Material/Parts2%

Amplification2%

Common questions

Is l5-30r profitable to sell on Amazon United States?: The niche generates $72K/yr across 75 tracked products. 6 of 14 products launched in the last 360 days are still selling. 90-day search growth is -17.1%. Flapen's verdict: Worth a look (54/100).
How competitive is the l5-30r niche?: 43 brands and 122 sellers compete. The top 5 products take 24% of clicks and top 5 brands hold 50% of demand.
What do buyers complain about in l5-30r?: Top complaints mined from reviews: Size-Overall, Quality-Overall, Defective Material/Parts. The return rate is 3.5%.
When does demand for l5-30r peak?: Demand peaks in Jan; the busiest month runs 1.6× the quietest.
What does it cost to enter the l5-30r niche?: Listings span $6.95–$75.12; the average listing price is $20.23 (sweet spot $15–$100). The average incumbent carries 370 reviews — the moat a new listing must climb.

l5-30r

l5-30r market data

Competition & brand share

Demand & seasonality

Top l5-30r search terms

Top l5-30r products on Amazon

Top sellers

Newest

Trending

What buyers say about l5-30r

What buyers love

What buyers complain about

Top return reasons

Common questions

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