Is mercury thermometer profitable to sell on Amazon United States?

The niche generates $272K/yr across 14 tracked products. 2 of 6 products launched in the last 360 days are still selling. 90-day search growth is -30.8%. Flapen's verdict: Skip it (46/100).

How competitive is the mercury thermometer niche?

10 brands and 50 sellers compete. The top 5 products take 81% of clicks and top 5 brands hold 90% of demand.

What do buyers complain about in mercury thermometer?

Top complaints mined from reviews: Functionality-Overall, Quality-Overall, Measurement/Reading Accuracy. The return rate is 0.8%.

When does demand for mercury thermometer peak?

Demand peaks in Jan–Feb–Sep; the busiest month runs 2.3× the quietest.

What does it cost to enter the mercury thermometer niche?

Listings span $6.90–$27.90; the average listing price is $12.94 (sweet spot $15–$100). The average incumbent carries 2,409 reviews — the moat a new listing must climb.

Mercury Thermometer

Skip it

Soft demand (-30.8% this quarter) — this niche doesn't clear our bar today.

Returns

Incredible0.8%

return rate — above 5% kills the launch gate

Quality gap

Great4.2★

avg incumbent rating — lower means beatable quality

Conversion

Good6.3%

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

Price range

Good$6.90–$27.90

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

Avg price

Good$12.94

avg listing price — sweet spot $15–$100

Market size

Okay$272K

$272K/yr · 334K searches

Review moat

Okay2,409.29

avg incumbent reviews — the moat a new listing must climb

Brand share

Okay90%

top-5 brand share — brands hold most of the demand

Competition

Bad81%

top-5 click share — a locked-up shelf

Growth

Bad-30.8%

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

Is mercury thermometer profitable on Amazon?

According to Flapen's Amazon United States niche tracking, mercury thermometer is a $272K/yr Amazon United States market (334K searches/yr). The top 5 brands hold 90% of demand. Demand peaks in Jan–Feb–Sep. Verdict: Skip it — 46/100.

Data updated Jul 14, 2026 · scored weekly · How we score niches

mercury thermometer market size & sales

Units sold, revenue, conversion and listing quality across the tracked shelf.

Units sold / yr: 20K–25K; avg 1,500–2,000/product
Revenue / yr: $259K–$324K; units × avg price
Conversion rate: 6.3%
Avg BSR: #54
Page quality: 0%
Prime: 100%
Sponsored: 93%
Out of stock: 0.0%
Avg brand age: 77 months
Avg seller age: 173 days

Competition: brands, sellers & click share

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

Brands

10 rising

Sellers

Top-5 brand share

90%

Top 20: 100%

Top-5 click share

81%

Top 20: 100%

Open market

JOINPAYA34%
TOYANDONA24%
DEARMAMY23%
MAGICLULU4%
SP Scienceware3%
HARIKA LIFE3%
Open — no brand owns it (4 brands, 7%)

mercury thermometer demand & seasonality

Weekly Amazon search volume, last 104 weeks — -30.8% search growth over the last 90 days.

Peak months: Jan, Feb, Sep · busiest ÷ quietest = 2.3×

Open Trend

Top mercury thermometer search terms shoppers use

The exact queries shoppers type, with yearly volume, growth and conversion.

mercury thermometer95K/yr -26.5%4.5% conv.
termometro de mercurio58K/yr -37.8%7.4% conv.
glass thermometer39K/yr -25.0%3.8% conv.
mercury thermometer for adults24K/yr -41.8%8.6% conv.
termmetro de mercurio18K/yr -15.5%5.0% conv.
glass thermometer for adults13K/yr -34.7%6.9% conv.
thermometer mercury11K/yr -34.3%5.0% conv.
manual thermometer7K/yr -17.5%2.5% conv.
old fashioned thermometer6K/yr -17.5%2.9% conv.
glass thermometers5K/yr -24.8%1.7% conv.

All search terms

Top mercury thermometer products & what they sell for

Every tracked product — its share of the shelf, its review moat, and what it sells for.

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 14 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

JOINPAYA 2Pc Glass Oral Temperature Adult: Free Clinic Armpit Fast Reading Fever Indicator

JOINPAYA$10.354.4★1,486 rev

Glass Oral Adults Classic Accurate Temperature Measurement for Fever Oral Armpit Families Clinic

DEARMAMY$10.013.3★780 rev

TOYANDONA 3PCS Glass Temperatures Measurement Adult - General Use Temperature Testing Tools Accurate Temperature Measurement for Families Dual Scale

TOYANDONA$11.514.3★419 rev

Glass Cuban Temperature Thermometers: Thermometers for Fever - Old Fashioned Axillary & Oral Thermometer for Adults Kids Elderly &

JOINPAYA$14.334.5★72 rev

SP H-B DURAC General Purpose Lab Thermometer Total Immersion Glass Liquid Thermometer for Laboratories Universities Food and Beverage Processing -20 to 150 Degrees Celsius

SP Scienceware$12.364.0★1,154 rev

Newest

by launch date

JOINPAYA Glass Thermometer: Cuban Temperature Thermometer for Fever - Traditional Old Fashioned for Adults Kids & - 6Pack

JOINPAYA$16.489 rev

3mo ago

Glass Cuban Temperature Thermometers: Thermometers for Fever - Old Fashioned Axillary & Oral Thermometer for Adults Kids Elderly &

JOINPAYA$14.3372 rev

9mo ago

Toyvian Accurate Temperature Adult 2pcs Dual Scale Glass Temperature Measurement Tool for Home Use - Fast Reading

Toyvian$8.0215 rev

10mo ago

MAGICLULU 5Pcs Oral Temperature for Adults Dual Scale & Glass Traditional Underarm Body Temperature with Case Accurate Measurement for Kids Babies Elderly Home Family Clinics Fever Indicator

MAGICLULU$16.77153 rev

11mo ago

TOYANDONA 3PCS Glass Temperatures Measurement Adult - General Use Temperature Testing Tools Accurate Temperature Measurement for Families Dual Scale

TOYANDONA$11.51419 rev

11mo ago

What reviews say buyers love and hate about mercury thermometer

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

What buyers love

Ease Of Use23%

“Easy to read”

Quality-Overall12%

“Excellent product”

Value For Money12%

“Great value”

Advertised Vs Actual Product12%

“AS DESCRIBED”

Efficiency9%

“It was doing so well”

Temperature Control7%

“Good thermometer and easy to use,”

Accuracy-Overall6%

“Fast and accurate”

Design-Overall2%

“The design is simple”

Durability2%

“Pretty durable”

Battery Life1%

“It provides accurate results without relying on batteries or electronics”

What buyers complain about

Functionality-Overall16%

“Didn't work”

Quality-Overall12%

“Awful quality control”

Measurement/Reading Accuracy10%

“Incorrect readings”

Durability8%

“Broke right away”

Ease Of Use7%

“Difficult to read”

Battery Life7%

“battery was dead”

Accuracy-Overall7%

“Inaccurate readings”

Value For Money5%

“Cheap”

Advertised Vs Actual Product4%

“This is misleading advertising”

Temperature Control4%

“Does not measure the temperature accurately at all”

Top return reasons

Measurement/Reading Accuracy32%

Functionality-Overall19%

Accuracy-Overall8%

Heating7%

Temperature Control7%

Display-Overall6%