Is 3 prong plug profitable to sell on Amazon United States?

The niche generates $71K/yr across 39 tracked products. 2 of 2 products launched in the last 360 days are still selling. 90-day search growth is -4.2%. Flapen's verdict: Skip it (49/100).

How competitive is the 3 prong plug niche?

31 brands and 71 sellers compete. The top 5 products take 40% of clicks and top 5 brands hold 50% of demand.

What do buyers complain about in 3 prong plug?

Top complaints mined from reviews: Durability, Charging, Quality-Overall. The return rate is 1.6%.

When does demand for 3 prong plug peak?

Demand peaks in Nov–Dec; the busiest month runs 1.6× the quietest.

What does it cost to enter the 3 prong plug niche?

Listings span $3.71–$22.66; the average listing price is $9.21 (sweet spot $15–$100). The average incumbent carries 9,744 reviews — the moat a new listing must climb.

3 prong plug

Skip it

A small market ($71K/yr) — this niche doesn't clear our bar today.

Brand share

Great50%

top-5 brand share — no brand owns this niche

Returns

Great1.6%

return rate — above 5% kills the launch gate

Competition

Good40%

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

Conversion

Good6.5%

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

Price range

Okay$3.71–$22.66

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

Quality gap

Okay4.6★

avg incumbent rating — lower means beatable quality

Avg price

Okay$9.21

avg listing price — sweet spot $15–$100

Growth

Bad-4.2%

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

Review moat

Bad9,743.56

avg incumbent reviews — the moat a new listing must climb

Market size

Bad$71K

$71K/yr · 120K searches

According to Flapen's Amazon United States niche tracking, 3 prong plug is a $71K/yr Amazon United States market (120K searches/yr). The top 5 brands hold 50% of demand. Demand peaks in Nov–Dec. Verdict: Skip it — 49/100.

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

3 prong plug market data

Units sold / yr: 8K–10K; avg 100–250/product
Revenue / yr: $74K–$92K; units × avg price
Conversion rate: 6.5%
Avg BSR: #41
Page quality: 0%
Prime: 97%
Sponsored: 87%
Out of stock: 4.6%
Avg brand age: 48 months
Avg seller age: 182 days

Competition & brand share

The top 5 products take 40% of clicks — established leaders, but buyers still shop beyond them.

Brands

31 rising

Sellers

Top-5 brand share

50%

Top 20: 87%

Top-5 click share

40%

Top 20: 78%

Open market

45%

Leviton23%
Herfair8%
ThunderWay7%
Bangjia6%
TROND5%
OFOAEEA5%

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -4.2% search growth over the last 90 days.

Peak months: Nov, Dec · busiest ÷ quietest = 1.6×

Open Trend

Top 3 prong plug search terms

3 prong plug34K/yr -1.3%7.9% conv.
clavijas electricas18K/yr -15.3%1.6% conv.
ac plug adapter12K/yr +47.8%1.6% conv.
adaptor plugs14K/yr -15.0%3.8% conv.
electrical plugs 3 prong12K/yr -34.5%5.5% conv.
cord plug6K/yr +1.1%3.9% conv.
plug adaptor6K/yr +3.6%3.7% conv.
electrical adapter5K/yr +21.4%4.9% conv.
electric plugs for cords5K/yr -22.0%3.7% conv.
enchufes elctricos5K/yr -7.6%0.1% conv.

All search terms

Top 3 prong plug 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

Leviton 515PV-OR 15 Amp 125 Volt Grounding Plug Orange

Leviton$4.034.8★7,889 rev

Electrical Replacement Plugs Male End Extension Cord 125V 15A 2Pole 3Wire 2 Pole Male Straight Blade Plug Ground Neutral Generator Plug 3 Prong Power Cord 3 Pack

Herfair$7.354.3★258 rev

NEMA 5-15P Electrical Replacement Plugs End Extension Cord Ends 125V 15A 2Pole 3Wire Male PlugGround Neutral Generator Plug3 Prong Power Replacement Type (3)

Bangjia$10.024.3★401 rev

ThunderWay Electrical Replacement Plug & Connector Set Extension Cord Ends Male and Female 15A 125V Straight Blade Plug Grounding Type NEMA 5-15P&5-15R 3-Prong Straight Blade-5 Set UL Listed

ThunderWay$19.374.6★780 rev

Replacement Plugs 3 Pack 3 Prong Replacement Plug with 1 Screwdriver Extension Cord Ends ReplacementPlug 3 Prong Neutral Ground Bonding Plugg 3 Wire 15A 125V Male Plug Black

OFOAEEA$8.144.4★369 rev

Newest

by launch date

ThunderWay Electrical Replacement Plug Extension Cord Ends Male 3 Prong NEMA 5-15P 15 Amp 125 Volt Commercial & Industrial Grade Straight Blade Grounding Type UL Listed Yellow 5 Pack

ThunderWay$9.8937 rev

7mo ago

Power Cord 5ft(1.5m) 10 Amps 125 Volts 18AWG 3 Prong AC Power Cord Cable for Electronics TV Computer Printer Radio Monitor Samsung Dell Vizio LG Asus Laptop and More-ETL Listed

Vockjour$5.95319 rev

9mo ago

Electrical Replacement Plugs Male End Extension Cord 125V 15A 2Pole 3Wire 2 Pole Male Straight Blade Plug Ground Neutral Generator Plug 3 Prong Power Cord 3 Pack

Herfair$7.35258 rev

1y ago

Portable 3 Prong to 2 Prong Outlet Adapter Fireproof 392 3-2 Prong Adapter Converter Heavy Duty Wall Plug Adapter for Household Appliances Industrial 1875W Max 4 Packs

SerBion$7.092,170 rev

1y ago

REKNA USB Wall Charger Dual Port Cube Power Adapter Charger Plug Block Charging Box Dual Port Wall Charging Adapter Compatible for i Phone 14 13 12 11Milky White (3-Pack)

REKNA$5.794,719 rev

2y ago

What buyers say about 3 prong plug

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

What buyers love

Quality-Overall14%

“Fantastic quality”

Advertised Vs Actual Product12%

“As Expected”

Socket/Port/Plug11%

“Superb plug”

Charging11%

“Charges fast”

Value For Money9%

“Great deal”

Ease Of Use8%

“Easy to replace”

Size-Overall4%

“Exact fit”

Assembly/Installation3%

“Easy to put together”

Portability3%

“Great for travel”

Efficiency2%

“It works”

What buyers complain about

Durability17%

“Doesn't Last”

Charging12%

“Didnt charge”

Quality-Overall9%

“Poor Quality Control”

Functionality-Overall8%

“Does not work well”

Socket/Port/Plug7%

“The usb ports don't work”

Noise Level7%

“Too loud”

Size-Overall3%

“Too short”

Heating3%

“overheated”

Connectivity-Overall2%

“nothing to connect to”

Value For Money2%

“Not even worth $1.00”

Top return reasons

Size-Overall24%

Charging15%

Compatibility-Overall13%

Functionality-Overall9%

Socket/Port/Plug9%

Value For Money5%

Advertised Vs Actual Product5%

Defective Material/Parts4%