Is l6-30p profitable to sell on Amazon United States?

The niche generates $29K/yr across 13 tracked products. 0 of 3 products launched in the last 360 days are still selling. 90-day search growth is -5.9%. Flapen's verdict: Skip it (39/100).

How competitive is the l6-30p niche?

9 brands and 50 sellers compete. The top 5 products take 80% of clicks and top 5 brands hold 92% of demand.

What do buyers complain about in l6-30p?

Top complaints mined from reviews: Quality-Overall, Locking Mechanism, Product Condition. The return rate is 1.9%.

When does demand for l6-30p peak?

Demand is steady year-round — the busiest month runs 1.4× the quietest.

What does it cost to enter the l6-30p niche?

Listings span $7.20–$28.98; the average listing price is $15.38 (sweet spot $15–$100). The average incumbent carries 358 reviews — the moat a new listing must climb.

l6-30p

Skip it

A small market ($29K/yr) — this niche doesn't clear our bar today.

Conversion

Great10.4%

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

Review moat

Great357.62

avg incumbent reviews — the moat a new listing must climb

Returns

Great1.9%

return rate — above 5% kills the launch gate

Avg price

Great$15.38

avg listing price — sweet spot $15–$100

Price range

Good$7.20–$28.98

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

Growth

Bad-5.9%

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

Brand share

Bad92%

top-5 brand share — brand-locked demand

Quality gap

Bad4.7★

avg incumbent rating — lower means beatable quality

Competition

Bad80%

top-5 click share — a locked-up shelf

Market size

Bad$29K

$29K/yr · 18K searches

According to Flapen's Amazon United States niche tracking, l6-30p is a $29K/yr Amazon United States market (18K searches/yr). The top 5 brands hold 92% of demand. Verdict: Skip it — 39/100.

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

l6-30p market data

Units sold / yr: 4K–5K; avg 250–500/product
Revenue / yr: $62K–$77K; units × avg price
Conversion rate: 10.4%
Avg BSR: #1,194
Page quality: 0%
Prime: 100%
Sponsored: 85%
Out of stock: 0.0%
Avg brand age: 64 months
Avg seller age: 185 days

Competition & brand share

The top 5 products capture 80% of clicks — a locked-up shelf that new listings rarely crack.

Brands

9 falling

Sellers

Top-5 brand share

92%

Top 20: 100%

Top-5 click share

80%

Top 20: 100%

Open market

ENERLITES34%
Leviton33%
ELEGRP17%
Pass & Seymour4%
HUARLPLUG3%
AIDA3%
Open — no brand owns it (3 brands, 6%)

Demand & seasonality

Weekly Amazon search volume, last 88 weeks — -5.9% search growth over the last 90 days.

No pronounced peak months · busiest ÷ quietest = 1.4×

Open Trend

Top l6-30p search terms

l6-30p9K/yr -5.3%9.9% conv.
l6-304K/yr -14.9%8.8% conv.
nema l6-30p3K/yr -0.6%8.4% conv.
nema l6-302K/yr +0.7%6.9% conv.

All search terms

Top l6-30p 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.

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

ENERLITES NEMA L6-30P Locking Plug Connector for Generator Twist Lock Male Plug 30 Amp 250 Volt 2 Pole 3 Wire Grounding Industrial Grade Heavy Duty UL Listed 66461-BK Black

ENERLITES$8.644.6★220 rev

Leviton 30 Amp 250 Volt NEMA L6-30P 2P 3W Locking Plug Industrial Grade Grounding 2621 White

Leviton$15.894.7★479 rev

ELEGRP NEMA L6-30P & NEMA L6-30R Locking Plug and Connector Set Generator Twist Lock Plug Socket 30 Amp 250V 2 Pole 3 Wire Grounding Industrial Grade Heavy Duty UL Listed (1 Set Black/White)

ELEGRP$19.644.7★161 rev

Leviton 2620 30 Amp 250 Volt Flush Mounting Locking Receptacle Industrial Grade Grounding V-0-MAX Black

Leviton$15.504.8★1,277 rev

ELEGRP NEMA L6-30P Locking Plug Generator Twist Lock Adapter Plug 30 Amp 250V 2 Pole 3 Wire Grounding Industrial Grade Heavy Duty UL Listed (1 Pack Black/White)

ELEGRP$9.304.6★285 rev

Newest

by launch date

ENERLITES NEMA L6-30P & L6-30R Locking Plug and Receptacle for Generator 30 Amp 250 Volt 2 Pole 3 Wire Grounding Industrial Grade Heavy Duty UL Listed Black(1 Set)

ENERLITES$19.66352 rev

7mo ago

MECMO 30A/250V NEMA L6-30P & L6-30R Generator Locking Plug Connector Set 3 Prong Twist Lock Male and Female Adapter Plug Socket 30 Amp 125 Volt 2P 3W Grounding Industrial Grade Heavy Duty

MECMO$17.2630 rev

8mo ago

2Pack NEMA L6-30P Locking Plug 30A 250V ETL Certified

HUARLPLUG$14.239 rev

8mo ago

Yomiuwo 5 Pack NEMA L6-30P Locking Plug 30 Amp 250V Twist Lock Male Plug 2 Pole 3 Wire Grounding Industrial Grade Heavy Duty Generator Adapter UL Listed

Yomiuwo$28.989 rev

1y ago

AIDA NEMA L6-30P & NEMA L6-30R Locking Plug and Connector Twist Generator Male and Female Adapter 30 Amp 250Volt 2-Pole 3-Wire Grounding Industrial-Strength Heavy Duty UL Listed

AIDA$19.3529 rev

2y ago

What buyers say about l6-30p

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

What buyers love

Value For Money13%

“Great value”

Socket/Port/Plug13%

“Very good plug for the money”

Quality-Overall12%

“Great quality”

Advertised Vs Actual Product11%

“As advertised”

Assembly/Installation9%

“configuration, exactly what I needed for my generator setup”

Strength7%

“Sturdy Connector That's Easy to Setup”

Size-Overall6%

“Good fit”

Efficiency5%

“Worked well”

Ease Of Use4%

“It is easy to use”

Durability4%

“Good quality, works well, seems durable”

What buyers complain about

Quality-Overall25%

“Junk”

Locking Mechanism14%

“Twist lock not so good”

Product Condition14%

“Maybe used, possibly returned, definitely not useable”

Heating7%

“No, it was not heat from the kilns”

Connectivity-Overall6%

“the difficulty connecting the set together”

Material Quality4%

“The plastic is thin and brittle and not thick nylon like all many of the well-known and trusted manufacturers”

Thickness4%

“The plastic is thin and brittle and not thick nylon like all many of the well-known and trusted manufacturers”

Assembly/Installation3%

“the difficulty connecting the set together”

Water Resistance3%

“I wouldnt say its very water resistant”

Top return reasons

Size-Overall59%

Compatibility-Overall15%

Socket/Port/Plug8%

Defective Material/Parts4%

Functionality-Overall4%

Value For Money3%

Connectivity-Overall2%

Quality-Overall2%

Advertised Vs Actual Product2%

Certifications1%

Common questions

Is l6-30p profitable to sell on Amazon United States?: The niche generates $29K/yr across 13 tracked products. 0 of 3 products launched in the last 360 days are still selling. 90-day search growth is -5.9%. Flapen's verdict: Skip it (39/100).
How competitive is the l6-30p niche?: 9 brands and 50 sellers compete. The top 5 products take 80% of clicks and top 5 brands hold 92% of demand.
What do buyers complain about in l6-30p?: Top complaints mined from reviews: Quality-Overall, Locking Mechanism, Product Condition. The return rate is 1.9%.
When does demand for l6-30p peak?: Demand is steady year-round — the busiest month runs 1.4× the quietest.
What does it cost to enter the l6-30p niche?: Listings span $7.20–$28.98; the average listing price is $15.38 (sweet spot $15–$100). The average incumbent carries 358 reviews — the moat a new listing must climb.