Is grounding tester profitable to sell on Amazon United States?

The niche generates $67K/yr across 29 tracked products. 0 of 7 products launched in the last 360 days are still selling. 90-day search growth is -19.2%. Flapen's verdict: Skip it (49/100).

How competitive is the grounding tester niche?

21 brands and 75 sellers compete. The top 5 products take 48% of clicks and top 5 brands hold 55% of demand.

What do buyers complain about in grounding tester?

Top complaints mined from reviews: Functionality-Overall, Quality-Overall, Measurement/Reading Accuracy. The return rate is 2.5%.

When does demand for grounding tester peak?

Demand is steady year-round — the busiest month runs 1.6× the quietest.

What does it cost to enter the grounding tester niche?

Listings span $6.62–$171.05; the average listing price is $21.09 (sweet spot $15–$100). The average incumbent carries 3,080 reviews — the moat a new listing must climb.

grounding tester

Skip it

Soft demand (-19.2% this quarter) — this niche doesn't clear our bar today.

Avg price

Great$21.09

avg listing price — sweet spot $15–$100

Brand share

Great55%

top-5 brand share — no brand owns this niche

Conversion

Good5.5%

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

Competition

Good48%

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

Returns

Good2.5%

return rate — above 5% kills the launch gate

Quality gap

Good4.4★

avg incumbent rating — lower means beatable quality

Price range

Good$6.62–$171.05

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

Review moat

Okay3,079.69

avg incumbent reviews — the moat a new listing must climb

Market size

Bad$67K

$67K/yr · 57K searches

Growth

Bad-19.2%

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

Signals No Dominant Brand

According to Flapen's Amazon United States niche tracking, grounding tester is a $67K/yr Amazon United States market (57K searches/yr). The top 5 brands hold 55% of demand. Verdict: Skip it — 49/100.

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

grounding tester market data

Units sold / yr: 4K–5K; avg 100–250/product
Revenue / yr: $84K–$105K; units × avg price
Conversion rate: 5.5%
Avg BSR: #251
Page quality: 0%
Prime: 100%
Sponsored: 83%
Out of stock: 10.7%
Avg brand age: 48 months
Avg seller age: 168 days

Competition & brand share

The top 5 products take 48% of clicks — established leaders, but buyers still shop beyond them.

Brands

21 falling

Sellers

Top-5 brand share

55%

Top 20: 99%

Top-5 click share

48%

Top 20: 93%

Open market

37%

KLEIN TOOLS16%
GroundLuxe12%
Merisky11%
GAYA8%
BESTING8%
BTFO8%

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -19.2% search growth over the last 90 days.

No pronounced peak months · busiest ÷ quietest = 1.6×

Open Trend

Top grounding tester search terms

ground tester13K/yr -0.5%6.8% conv.
grounding tester16K/yr -26.2%6.9% conv.
grounding tester earthing6K/yr +0.3%5.8% conv.
grounding mat tester5K/yr -39.7%8.9% conv.
grounding meter tester for earthing4K/yr -10.1%4.2% conv.
grounding meter3K/yr +0.8%3.9% conv.
grounding outlet tester4K/yr -45.8%13.3% conv.
outlet tester for grounding3K/yr -24.6%5.9% conv.
grounding sheet tester3K/yr -34.0%9.4% conv.

All search terms

Top grounding tester 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

Outlet Tester for Grounding Products - Test Receptacles & Sockets for Proper Wiring - Simple Tool for Electrical Assessment

GroundLuxe$9.734.7★624 rev

Merisky Conductivity Test Pen Tester for Earthing Continuity Tester for Grounding Mats Sheets Pads Socks Pillow Cases. Use to Test Effectiveness of Earth Connected Products.

Merisky$9.624.2★352 rev

Klein Tools RT110 Outlet Tester AC Electrical Receptacle Tester for North American Outlets

KLEIN TOOLS$9.944.8★3,542 rev

BESTING Grounding Tester Kit with US Standard-No Battery Required Yellow

BESTING$14.144.5★97 rev

EARTHVERA Grounding Mat for Feet Sleep Improvement & Pain Relief 2416 Conductive Carbon Earthing Pad with Multimeter for Body Voltage Testing Inflammation Relief Stress Reduction Grounding Mat for Bed Desk Office | 15ft Cord Included

EARTHVERA$28.634.1★438 rev

Newest

by launch date

GAYA Grounding Kit | 4-Piece Earthing Set with Outlet Tester Conductivity Pen 15ft Grounding Cord & Dual Plug Adapter | Universal Compatibility for Grounding Mat Sheet & Pillowcase

GAYA$11.6613 rev

6mo ago

Grounding Tester Kit GFCI Inspection Socket Tester with Conductivity Test Pen Outlet Continuity Testing Tool for Mat Pads Sheets Pillow Cases Blankets Wristband (US Standard Outlet)

BTFO$9.7423 rev

8mo ago

Grounding Product Test Kit with Outlet Tester and Conductivity Test Pen Grounding Tester Earthing Ground Tester Conductivity for Mat Pads Sheets Pillow Cases Blankets Wristband Accessories

hinbkenla$8.3512 rev

9mo ago

Grounding Tester with Grounding Wire (White)

NHIDKU$15.22101 rev

10mo ago

Grounding Tester Kit Conductivity Test Pen & Outlet Continuity Tester Ground Product Test Kit for Mat Pads Sheets Pillow Cases Blankets Wristband Accessories (US Standard Outlet)

BTFO$9.4692 rev

11mo ago

What buyers say about grounding tester

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

What buyers love

Advertised Vs Actual Product17%

“As advertised”

Ease Of Use17%

“Simple to use”

Value For Money16%

“Works good for the money”

Quality-Overall13%

“Excellent product”

Efficiency12%

“WORKS ON WHAT I USE”

Measurement/Reading Accuracy3%

“Clear, accurate, and incredibly helpful”

Functionality-Overall2%

“it does work ok”

Instructions/User Manual/Troubleshooting2%

“Two stars for good instructions”

Battery Life2%

“Battery it came with is working fine”

Strength1%

“The build feels solid”

What buyers complain about

Functionality-Overall18%

“Did not function properly”

Quality-Overall13%

“Complete garbage”

Measurement/Reading Accuracy11%

“The test meter is not function”

Durability9%

“Cheap and breaks easily”

Battery Life4%

“melting the battery”

Ease Of Use4%

“Too complicated for me”

Value For Money3%

“Not worth the postage”

Defective Material/Parts2%

“it turned out all had a faulty. old”

Size-Overall2%

“not the ideal size”

Instructions/User Manual/Troubleshooting2%

“Reading the manual is a bigger chore than diagnosing the issue you made the purchase to fix”

Top return reasons

Functionality-Overall32%

Measurement/Reading Accuracy13%

Value For Money9%

Advertised Vs Actual Product9%

Compatibility-Overall7%

Defective Material/Parts6%

Size-Overall4%

Instructions/User Manual/Troubleshooting3%

Quality-Overall3%

Ease Of Use3%

Common questions

Is grounding tester profitable to sell on Amazon United States?: The niche generates $67K/yr across 29 tracked products. 0 of 7 products launched in the last 360 days are still selling. 90-day search growth is -19.2%. Flapen's verdict: Skip it (49/100).
How competitive is the grounding tester niche?: 21 brands and 75 sellers compete. The top 5 products take 48% of clicks and top 5 brands hold 55% of demand.
What do buyers complain about in grounding tester?: Top complaints mined from reviews: Functionality-Overall, Quality-Overall, Measurement/Reading Accuracy. The return rate is 2.5%.
When does demand for grounding tester peak?: Demand is steady year-round — the busiest month runs 1.6× the quietest.
What does it cost to enter the grounding tester niche?: Listings span $6.62–$171.05; the average listing price is $21.09 (sweet spot $15–$100). The average incumbent carries 3,080 reviews — the moat a new listing must climb.