Is kill a watt profitable to sell on Amazon United States?

The niche generates $320K/yr across 10 tracked products. 90-day search growth is -7.4%. Flapen's verdict: Skip it (41/100).

How competitive is the kill a watt niche?

5 brands and 43 sellers compete. The top 5 products take 81% of clicks and top 5 brands hold 100% of demand.

What do buyers complain about in kill a watt?

Top complaints mined from reviews: Measurement/Reading Accuracy, Instructions/User Manual/Troubleshooting, Durability. The return rate is 2.6%.

When does demand for kill a watt peak?

Demand is steady year-round — the busiest month runs 1.5× the quietest.

What does it cost to enter the kill a watt niche?

Listings span $9.69–$47.08; the average listing price is $23.74 (sweet spot $15–$100). The average incumbent carries 3,854 reviews — the moat a new listing must climb.

kill a watt

Skip it

Brand-locked demand (top 5 brands take 100% of clicks) — this niche doesn't clear our bar today.

Avg price

Incredible$23.74

avg listing price — sweet spot $15–$100

Price range

Great$9.69–$47.08

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

Conversion

Great7.8%

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

Returns

Good2.6%

return rate — above 5% kills the launch gate

Market size

Good$320K

$320K/yr · 174K searches

Quality gap

Okay4.5★

avg incumbent rating — lower means beatable quality

Review moat

Okay3,854

avg incumbent reviews — the moat a new listing must climb

Growth

Bad-7.4%

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

Competition

Bad81%

top-5 click share — a locked-up shelf

Brand share

Bad100%

top-5 brand share — brand-locked demand

According to Flapen's Amazon United States niche tracking, kill a watt is a $320K/yr Amazon United States market (174K searches/yr). The top 5 brands hold 100% of demand. Verdict: Skip it — 41/100.

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

kill a watt market data

Units sold / yr: 13K–15K; avg 1,000–1,250/product
Revenue / yr: $297K–$356K; units × avg price
Conversion rate: 7.8%
Avg BSR: #306
Page quality: 0%
Prime: 100%
Sponsored: 80%
Out of stock: 0.0%
Avg brand age: 51 months
Avg seller age: 176 days

Competition & brand share

The top 5 products capture 81% of clicks — a locked-up shelf that new listings rarely crack.

Brands

5 flat

Sellers

Top-5 brand share

100%

Top 20: 100%

Top-5 click share

81%

Top 20: 100%

Open market

MECHEER47%
P333%
KILL A WATT11%
Tapo5%
HBN5%

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -7.4% search growth over the last 90 days.

No pronounced peak months · busiest ÷ quietest = 1.5×

Open Trend

Top kill a watt search terms

kill a watt meter50K/yr -14.4%8.6% conv.
kill a watt55K/yr -11.0%7.9% conv.
killawatt meter23K/yr +6.7%7.1% conv.
kill-a-watt meter13K/yr +0.7%5.0% conv.
killawatt9K/yr +7.2%6.3% conv.
kill-a watt6K/yr +27.5%3.8% conv.
kill a watt electricity usage monitor6K/yr -7.0%6.8% conv.
kill-a-watt7K/yr -9.2%7.2% conv.
kilowatt3K/yr +88.3%2.1% conv.
kill a watt power meter2K/yr -78.7%3.8% conv.

All search terms

Top kill a watt 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 10 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

Upgraded Watt Power Meter Plug Home Electrical Usage Monitor Consumption Energy Voltage Amps Kill Tester with Backlight Overload Protection 7 Modes Display

MECHEER$12.054.6★8,377 rev

P3 P4400 Kill A Watt Electricity Usage Monitor

P3$30.704.6★9,752 rev

P3 International P4460 Kill A Watt EZ Electricity Usage Monitor grey

P3$33.794.4★3,912 rev

Upgraded Watt Meter Power Meter Plug Home Energy Monitor Electricity Usage Monitor Electrical Usage Monitor Energy Voltage Amps Meter Tester with Backlight Overload Protection 8 Display Modes

MECHEER$9.964.6★3,148 rev

Kill A Watt Connect P4498 Electricity Usage Monitor Power Consumption Meter with Two Piece Housing and 35 Inch Cord for Easy Use

KILL A WATT$47.084.4★138 rev

Newest

by launch date

TP-Link Smart Plug Wi-Fi Mini Energy Monitoring Compatible with Alexa & Google Home & Samsung SmartThings Timer 15A/1800W Max ETL Certified 2.4G Wi-Fi Only Tapo P115(4-Pack)

Tapo$25.373,330 rev

2y ago

Upgraded Watt Meter Watt Usage Meter Plug Home Energy Monitor Consumption Electricity Usage Monitor Energy Voltage Amps Kill Tester with Backlight Overload Protection 8 Modes Display

MECHEER$9.93464 rev

2y ago

Kill A Watt Connect P4498 Electricity Usage Monitor Power Consumption Meter with Two Piece Housing and 35 Inch Cord for Easy Use

KILL A WATT$47.08138 rev

2y ago

P3 International P4456 Kill A Watt Flex Electricity Usage Monitor Advanced Power Meter with Data Memory CO Tracking & Cost Calculator Upgrade from P4400 Watt Meter

KILL A WATT$42.8977 rev

3y ago

Upgraded Watt Meter Power Meter Plug Home Energy Monitor Electricity Usage Monitor Electrical Usage Monitor Energy Voltage Amps Meter Tester with Backlight Overload Protection 8 Display Modes

MECHEER$9.963,148 rev

3y ago

What buyers say about kill a watt

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

What buyers love

Ease Of Use23%

“Easy to read”

Advertised Vs Actual Product16%

“As described”

Quality-Overall13%

“Excellent product”

Value For Money12%

“Great deal”

Efficiency7%

“Great product for testing cost of electrical devices in the home”

Measurement/Reading Accuracy6%

“They appear to be accurate”

Assembly/Installation4%

“Easy setup”

Battery Life2%

“Great Power Meter”

Functionality-Overall2%

“Otherwise, It's a nice device, works as expected, has enough functions”

Socket/Port/Plug1%

“the plug/socket remain on the wall with the display/buttons are easy to use”

What buyers complain about

Measurement/Reading Accuracy11%

“cost results just do not reflect an accurate readout”

Instructions/User Manual/Troubleshooting11%

“Instructions Poor”

Durability10%

“Broke after three days”

Functionality-Overall7%

“Did not work”

Ease Of Use6%

“Does not provide for simple use”

Quality-Overall6%

“They should do a better job at quality control”

Connectivity-Overall5%

“It just won't connect”

Size-Overall4%

“So big and bulky that it blocks both outlets”

Display-Overall4%

“next morning the screen would not react”

Value For Money3%

“how much it is costing me to run”

Top return reasons

Functionality-Overall20%

Connectivity-Overall9%

Compatibility-Overall9%

Advertised Vs Actual Product8%

Size-Overall8%

Measurement/Reading Accuracy7%

Value For Money7%

Defective Material/Parts6%

Display-Overall6%

Socket/Port/Plug4%

Common questions

Is kill a watt profitable to sell on Amazon United States?: The niche generates $320K/yr across 10 tracked products. 90-day search growth is -7.4%. Flapen's verdict: Skip it (41/100).
How competitive is the kill a watt niche?: 5 brands and 43 sellers compete. The top 5 products take 81% of clicks and top 5 brands hold 100% of demand.
What do buyers complain about in kill a watt?: Top complaints mined from reviews: Measurement/Reading Accuracy, Instructions/User Manual/Troubleshooting, Durability. The return rate is 2.6%.
When does demand for kill a watt peak?: Demand is steady year-round — the busiest month runs 1.5× the quietest.
What does it cost to enter the kill a watt niche?: Listings span $9.69–$47.08; the average listing price is $23.74 (sweet spot $15–$100). The average incumbent carries 3,854 reviews — the moat a new listing must climb.

kill a watt

kill a watt market data

Competition & brand share

Demand & seasonality

Top kill a watt search terms

Top kill a watt products on Amazon

Top sellers

Newest

Trending

What buyers say about kill a watt

What buyers love

What buyers complain about

Top return reasons

Common questions

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