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47

black door lock

Skip it

A small market ($52K/yr) — this niche doesn't clear our bar today.

Market size 13Growth 34Conversion 61Competition 61Returns 32Price range 79Avg price 95Brand share 65Review moat 37Quality gap 47

Avg price

Incredible$33.96

avg listing price — sweet spot $15–$100

Price range

Great$10.06–$116.97

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

Brand share

Good66%

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

Conversion

Good5.3%

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

Competition

Good48%

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

Quality gap

Okay4.5★

avg incumbent rating — lower means beatable quality

Review moat

Okay2,786.61

avg incumbent reviews — the moat a new listing must climb

Growth

Okay+7.5%

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

Returns

Okay4.4%

return rate — above 5% kills the launch gate

Market size

Bad$52K

$52K/yr · 29K searches

According to Flapen's Amazon United States niche tracking, black door lock is a $52K/yr Amazon United States market (29K searches/yr). The top 5 brands hold 66% of demand. Verdict: Skip it — 47/100.

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

black door lock market data

Units sold / yr
2K–2K
avg 0–100/product
Revenue / yr
$51K–$68K
units × avg price
Conversion rate
5.3%
Avg BSR
#38
Page quality
0%
Prime
100%
Sponsored
94%
Out of stock
2.5%
Avg brand age
40 months
Avg seller age
169 days

Competition & brand share

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

Brands

21 falling

Sellers

48

Top-5 brand share

66%

Top 20: 99%

Top-5 click share

48%

Top 20: 85%

Open market

28%

  • Estmoon17%
  • Amazon Basics14%
  • Kwikset12%
  • Lanwandeng11%
  • BESTTEN11%
  • Cielsa Dawn6%

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — +7.5% search growth over the last 90 days.
700500Spike '25Prime Day '25Spike '26SepDecMarJunAugNovMarMay

No pronounced peak months · busiest ÷ quietest = 1.3×

Top black door lock search terms

  • black door lock13K/yr
  • door lock black8K/yr
  • black door locks5K/yr
  • black door knob with key4K/yr
All search terms

Top black door lock 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.

0%3%$2K6%$3K9%$5K12%$6K1001K10K100K Reviews — right = deep review moat Market share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 24 tracked products in this niche — three views at once, no toggling.

What buyers say about black door lock

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

What buyers love

Assembly/Installation22%

“easy assembly”

Quality-Overall15%

“they are quality knobs”

Locking Mechanism15%

“The lock works smoothly”

Value For Money9%

“they are affordable”

Strength5%

“Sturdy and easy to install”

Design-Overall4%

“Nice Design”

Advertised Vs Actual Product3%

“As advertised”

Ease Of Use3%

“Ease of use”

Security3%

“Safety and security”

Efficiency2%

“Effective”

What buyers complain about

Quality-Overall22%

“Bad quality”

Locking Mechanism15%

“Lock is horrible”

Durability13%

“Broke within a week”

Assembly/Installation7%

“hard to install”

Size-Overall6%

“It was too big”

Functionality-Overall5%

“DOESNT WORK”

Value For Money3%

“half the price”

Instructions/User Manual/Troubleshooting2%

“The instructions were not very good”

Paint Quality2%

“Peeling paint”

Strength2%

“a bit flimsy”

Top return reasons

Size-Overall30%
Locking Mechanism13%
Defective Material/Parts9%
Functionality-Overall9%
Compatibility-Overall7%
Mechanism Issues7%
Color4%
Value For Money4%
Assembly/Installation3%
Advertised Vs Actual Product3%

Common questions

Is black door lock profitable to sell on Amazon United States?
The niche generates $52K/yr across 33 tracked products. 2 of 2 products launched in the last 360 days are still selling. 90-day search growth is +7.5%. Flapen's verdict: Skip it (47/100).
How competitive is the black door lock niche?
21 brands and 48 sellers compete. The top 5 products take 48% of clicks and top 5 brands hold 66% of demand.
What do buyers complain about in black door lock?
Top complaints mined from reviews: Quality-Overall, Locking Mechanism, Durability. The return rate is 4.4%.
When does demand for black door lock peak?
Demand is steady year-round — the busiest month runs 1.3× the quietest.
What does it cost to enter the black door lock niche?
Listings span $10.06–$116.97; the average listing price is $33.96 (sweet spot $15–$100). The average incumbent carries 2,787 reviews — the moat a new listing must climb.