Is door knob with lock profitable to sell on Amazon United States?

The niche generates $2.0M/yr across 67 tracked products. 10 of 10 products launched in the last 360 days are still selling. 90-day search growth is -0.9%. Flapen's verdict: Worth a look (63/100).

How competitive is the door knob with lock niche?

25 brands and 73 sellers compete. The top 5 products take 29% of clicks and top 5 brands hold 50% of demand.

What do buyers complain about in door knob with lock?

Top complaints mined from reviews: Locking Mechanism, Quality-Overall, Durability. The return rate is 3.9%.

When does demand for door knob with lock peak?

Demand is steady year-round — the busiest month runs 1.2× the quietest.

What does it cost to enter the door knob with lock niche?

Listings span $6.88–$119.36; the average listing price is $29.99 (sweet spot $15–$100). The average incumbent carries 2,613 reviews — the moat a new listing must climb.

door knob with lock

Worth a look

Shows a sweet-spot price point ($29.99 avg), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.

Avg price

Incredible$29.99

avg listing price — sweet spot $15–$100

Market size

Great$2.0M

$2.0M/yr · 1.6M searches

Competition

Great29%

top-5 click share — an open shelf

Brand share

Great50%

top-5 brand share — no brand owns this niche

Price range

Great$6.88–$119.36

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

Conversion

Good4.0%

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

Quality gap

Okay4.5★

avg incumbent rating — lower means beatable quality

Review moat

Okay2,613.4

avg incumbent reviews — the moat a new listing must climb

Returns

Okay3.9%

return rate — above 5% kills the launch gate

Growth

Bad-0.9%

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

Signals No Dominant Brand

According to Flapen's Amazon United States niche tracking, door knob with lock is a $2.0M/yr Amazon United States market (1.6M searches/yr). The top 5 brands hold 50% of demand. Verdict: Worth a look — 63/100.

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

door knob with lock market data

Units sold / yr: 60K–80K; avg 1,000–1,250/product
Revenue / yr: $1.8M–$2.4M; units × avg price
Conversion rate: 4.0%
Avg BSR: #55
Page quality: 0%
Prime: 100%
Sponsored: 76%
Out of stock: 1.1%
Avg brand age: 47 months
Avg seller age: 149 days

Competition & brand share

Clicks spread well past the top 5 (29% combined) — an open shelf where new products get seen.

Brands

25 flat

Sellers

Top-5 brand share

50%

Top 20: 97%

Top-5 click share

29%

Top 20: 62%

Open market

43%

BESTTEN13%
Probrico11%
Kwikset9%
Copper Creek9%
Estmoon8%
Goldenwarm7%

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -0.9% search growth over the last 90 days.

No pronounced peak months · busiest ÷ quietest = 1.2×

Open Trend

Top door knob with lock search terms

black door knobs503K/yr -8.1%2.5% conv.
closet door knobs244K/yr -4.9%1.6% conv.
black door knobs interior106K/yr -9.0%2.1% conv.
doorknob with lock and key87K/yr -0.7%5.4% conv.
door knob lock69K/yr +16.5%3.1% conv.
black door knob69K/yr +2.9%3.5% conv.
door knob with key61K/yr +10.8%5.4% conv.
door knobs with lock and key41K/yr +49.0%2.2% conv.
door lock with key60K/yr +19.9%3.9% conv.
passage door knobs58K/yr -5.4%3.2% conv.

All search terms

Top door knob with 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.

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

BESTTEN Keyed Entry Door Knob with Lock Heavy Duty Interior and Exterior Door Lock Standard Ball Satin Nickel

BESTTEN$9.374.4★11,408 rev

Probrico Black Door Knobs for Bedroom Bathroom Interior Door Knob with Round Ball Matte Black Privacy Door Knob 6 Pack

Probrico$34.034.5★4,249 rev

Goldenwarm Matte Black Door Knobs Interior Privacy Bedroom Door Knob with Lock Black Interior Door Knobs Bathroom 6 Pack

Goldenwarm$58.144.5★142 rev

Estmoon 5 Pack Matte Black Door Handles Interior Door Knobs Keyless Privacy Bedroom Door Lock Heavy Duty Zinc Alloy Home Improvement Door Handleset for Bedrooms Bathrooms

Estmoon$51.454.4★2,159 rev

LANSTE Black Door Knobs 10 Pack Privacy Door Knobs Interior Door Knob for Bedroom/Bathroom Keyless Doorknobs Interior/Exterior Lockset Black Modern Design Door Hardware

LANSTE$46.484.6★118 rev

Newest

by launch date

LANSTE Black Door Knobs 10 Pack Privacy Door Knobs Interior Door Knob for Bedroom/Bathroom Keyless Doorknobs Interior/Exterior Lockset Black Modern Design Door Hardware

LANSTE$46.48118 rev

4mo ago

Goldenwarm Matte Black Door Knobs Interior Privacy Bedroom Door Knob with Lock Black Interior Door Knobs Bathroom 6 Pack

Goldenwarm$58.14142 rev

8mo ago

Plustool 8 Pack Matte Black Door Knobs Privacy Door Knob with Lock Interior Doorknobs with Round Ball Keyless Door Lockset for Bedrooms Bathrooms

Plustool$32.67332 rev

10mo ago

RAFECIEE Keyed Entry Door Knob with Lock and Key Exterior and Interior Door Lock for Bedroom Entry Door Handle for Front DoorSatin Nickel

RAFECIEE$8.97676 rev

1y ago

Estmoon 6 Pack Door Knobs Matte Black Privacy Door Knob with Lock Keyless Door Handle with Lock for Bedrooms/Bathrooms

Estmoon$27.71544 rev

2y ago

What buyers say about door knob with lock

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

What buyers love

Assembly/Installation21%

“Easy assemble”

Quality-Overall15%

“Solid quality”

Value For Money14%

“they are affordable”

Locking Mechanism11%

“The locking mechanism works smoothly”

Advertised Vs Actual Product4%

“As shown”

Size-Overall4%

“Awesome fit”

Design-Overall4%

“Well built”

Strength3%

“These are sturdy”

Ease Of Use3%

“Ease of use”

Efficiency3%

“Works Great”

What buyers complain about

Locking Mechanism19%

“Does not lock”

Quality-Overall17%

“Poor Quality Control”

Durability9%

“Fell apart”

Assembly/Installation8%

“Difficult to assemble”

Size-Overall5%

“It was too big”

Functionality-Overall4%

“doesn't function well”

Ease Of Use3%

“hard to turn”

Strength2%

“kind of flimsy”

Instructions/User Manual/Troubleshooting2%

“Not very good instructions”

Value For Money2%

“it looks much more expensive than it actually is”

Top return reasons

Size-Overall36%

Locking Mechanism12%

Functionality-Overall9%

Defective Material/Parts7%

Mechanism Issues6%

Compatibility-Overall6%

Color4%

Value For Money4%

Advertised Vs Actual Product3%

Quality-Overall3%

Common questions

Is door knob with lock profitable to sell on Amazon United States?: The niche generates $2.0M/yr across 67 tracked products. 10 of 10 products launched in the last 360 days are still selling. 90-day search growth is -0.9%. Flapen's verdict: Worth a look (63/100).
How competitive is the door knob with lock niche?: 25 brands and 73 sellers compete. The top 5 products take 29% of clicks and top 5 brands hold 50% of demand.
What do buyers complain about in door knob with lock?: Top complaints mined from reviews: Locking Mechanism, Quality-Overall, Durability. The return rate is 3.9%.
When does demand for door knob with lock peak?: Demand is steady year-round — the busiest month runs 1.2× the quietest.
What does it cost to enter the door knob with lock niche?: Listings span $6.88–$119.36; the average listing price is $29.99 (sweet spot $15–$100). The average incumbent carries 2,613 reviews — the moat a new listing must climb.