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51

baby bath thermometer

Worth a look

Shows low returns (1.5%), but soft demand (-12.8% this quarter) keeps it on the watch list.

Market size 77Growth 19Conversion 74Competition 23Returns 84Price range 38Avg price 63Brand share 38Review moat 46Quality gap 60

Returns

Great1.5%

return rate — above 6% kills the launch gate

Market size

Great$956K

$956K/yr · 1.0M searches

Conversion

Good6.9%

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

Avg price

Good$13.51

avg listing price — sweet spot $15–$100

Quality gap

Good4.4★

avg incumbent rating — lower means beatable quality

Review moat

Okay1,908.06

avg incumbent reviews — the moat a new listing must climb

Brand share

Okay82%

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

Price range

Okay$9.62–$18.25

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

Competition

Bad73%

top-5 click share — a locked-up shelf

Growth

Bad-12.8%

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

Competition

The top 5 products capture 73% of clicks — a locked-up shelf that new listings rarely crack.

Brands

12 rising

Sellers

19

Top-5 brand share

82%

Open market

14%

  • B&H33%
  • dar darouxiao18%
  • Dreambaby12%
  • DoliWish10%
  • Doli Yearning8%
  • Dr. Brown's4%
  • Open — no brand owns it (6 brands, 14%)

Product shelf

Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.

0%10%$96K20%$191K30%$287K40%$383K101001K10K Reviews — right = deep review moat Market share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 16 tracked products in this niche — three views at once, no toggling.

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -12.8% search growth over the last 90 days.
25K15KSpike '25Prime Day '25Spike '26SepDecMarJunAugNovMarMay

Peak months: Jan · busiest ÷ quietest = 1.4×

Reviews

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

What buyers love

Temperature Control26%

“it is accurate in the temperature”

Ease Of Use14%

“easy to read”

Quality-Overall7%

“Accurate price for quality”

Advertised Vs Actual Product5%

“works as advertised”

Durability5%

“Still works great”

Fun/Entertainment Experience5%

“My son loves playing with it”

Design-Overall3%

“Super cute design”

Value For Money3%

“I felt like it was worth the buy”

Battery Life3%

“Battery life is also long”

Color3%

“I like that it has a color”

What buyers complain about

Durability27%

“Died quickly”

Battery Life12%

“Terrible battery life”

Temperature Control9%

“Temperature fail”

Functionality-Overall9%

“Didnt work”

Measurement/Reading Accuracy7%

“Wrong readings”

Water Resistance5%

“its no longer waterproof”

Charging4%

“even though I can't charge it with USB :”

Color3%

“The color stopped working”

Quality-Overall3%

“Garbage”

Ease Of Use2%

“And not user friendly”

Top return reasons

Functionality-Overall32%
Measurement/Reading Accuracy18%
Temperature Control8%
Defective Material/Parts8%
Battery Life5%
Durability5%
Value For Money4%
Size-Overall3%
Advertised Vs Actual Product3%
Charging3%