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door knob child proof

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

Market size 80Growth 29Conversion 96Competition 12Returns 49Price range 0Avg price 29Brand share 0Review moat 20Quality gap 37

Conversion

Incredible14.0%

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

Market size

Great$1.1M

$1.1M/yr · 855K searches

Returns

Okay3.1%

return rate — above 6% kills the launch gate

Quality gap

Okay4.5★

avg incumbent rating — lower means beatable quality

Growth

Okay+2.9%

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

Avg price

Okay$9.46

avg listing price — sweet spot $15–$100

Review moat

Bad12,452.2

avg incumbent reviews — the moat a new listing must climb

Competition

Bad86%

top-5 click share — a locked-up shelf

Brand share

Bad100%

top-5 brand share — brand-locked demand

Price range

Bad$5.36–$12.97

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

Competition

The top 5 products capture 86% of clicks — a locked-up shelf that new listings rarely crack.

Brands

5 falling

Sellers

19

Top-5 brand share

100%

Open market

0%

  • EUDEMON35%
  • Safety 1st31%
  • Wappa Baby19%
  • Heart of Tafiti12%
  • Jool Baby2%

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%$113K20%$226K30%$339K40%$452K1001K10K100K Reviews — right = deep review moat Market share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 10 tracked products in this niche — three views at once, no toggling.

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — +2.9% search growth over the last 90 days.
23K18KSpike '26SepDecMarJunAugNovMarMay

No pronounced peak months · busiest ÷ quietest = 1.2×

Reviews

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

What buyers love

Ease Of Use16%

“Easy to use”

Quality-Overall11%

“The quality is there, they feel they will last his toddler years, maybe longer”

Locking Mechanism9%

“Convenient locks”

Advertised Vs Actual Product8%

“As described”

Assembly/Installation7%

“Easy to put on”

Security6%

“Keeps my son safe”

Value For Money6%

“Best money ever spent”

Strength5%

“Solid product”

Safety Standards5%

“Great safety”

Size-Overall3%

“Fit perfectly”

What buyers complain about

Ease Of Use22%

“Difficult to remove”

Size-Overall14%

“Too snug of a fit”

Functionality-Overall10%

“Didnt work”

Locking Mechanism6%

“Not secure enough”

Durability5%

“It is now broken”

Strength5%

“Flimsy plastic”

Quality-Overall4%

“Bad quality”

Age Suitability3%

“Not toddler proof”

Grip3%

“Very little pressure if any of some of them needed to turn the handle”

Adhesion/Stickiness2%

“Needs stronger adhesive”

Top return reasons

Size-Overall59%
Functionality-Overall8%
Compatibility-Overall7%
Locking Mechanism4%
Advertised Vs Actual Product3%
Ease Of Use3%
Adhesion/Stickiness3%
Defective Material/Parts2%
Handle Quality2%
Material Quality1%