Is door jammer profitable to sell on Amazon United Kingdom?

The niche generates £53K/yr across 39 tracked products. 1 of 5 products launched in the last 360 days are still selling. 90-day search growth is -35.3%. Flapen's verdict: Skip it (48/100).

How competitive is the door jammer niche?

34 brands and 55 sellers compete. The top 5 products take 48% of clicks and top 5 brands hold 51% of demand.

What do buyers complain about in door jammer?

Top complaints mined from reviews: Functionality-Overall, Locking Mechanism, Quality-Overall. The return rate is 1.6%.

What does it cost to enter the door jammer niche?

Listings span £3.13–£40.29; the average listing price is £13.20 (sweet spot $15–$100). The average incumbent carries 1,742 reviews — the moat a new listing must climb.

door jammer

Skip it

Soft demand (-35.3% this quarter) — this niche doesn't clear our bar today.

Brand share

Great51%

top-5 brand share — no brand owns this niche

Returns

Great1.6%

return rate — above 5% kills the launch gate

Quality gap

Good4.3★

avg incumbent rating — lower means beatable quality

Price range

Good£3.13–£40.29

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

Competition

Good48%

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

Avg price

Good£13.20

avg listing price — sweet spot $15–$100

Review moat

Okay1,742.26

avg incumbent reviews — the moat a new listing must climb

Conversion

Okay2.3%

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

Market size

Bad£53K

£53K/yr · 178K searches

Growth

Bad-35.3%

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

Signals No Dominant Brand

According to Flapen's Amazon United Kingdom niche tracking, door jammer is a £53K/yr Amazon United Kingdom market (178K searches/yr). The top 5 brands hold 51% of demand. Verdict: Skip it — 48/100.

Data updated Jul 18, 2026 · scored weekly · How we score niches

door jammer market data

Units sold / yr: 4K–5K; avg 100–250/product
Revenue / yr: £53K–£66K; units × avg price
Conversion rate: 2.3%
Avg BSR: #786
Page quality: 0%
Prime: 97%
Sponsored: 85%
Out of stock: 7.0%
Avg brand age: 38 months
Avg seller age: 173 days

Competition & brand share

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

Brands

34 rising

Sellers

Top-5 brand share

51%

Top 20: 85%

Top-5 click share

48%

Top 20: 80%

Open market

46%

AceMining20%
Door-Jammer16%
LUNAVAR8%
Generic4%
Crosize4%
nnOuOnn4%

Demand

Weekly Amazon search volume, last 19 weeks — -35.3% search growth over the last 90 days.

Open Trend

Top door jammer search terms

door security41K/yr -19.7%0.6% conv.
door jammer34K/yr -54.6%2.5% conv.
door security bar27K/yr -23.9%1.7% conv.
front door security14K/yr -27.4%0.8% conv.
door jammers for inside doors16K/yr -69.1%2.5% conv.
door blocker10K/yr -9.3%1.7% conv.
door security devices5K/yr +7.2%1.2% conv.
door jam7K/yr +3.3%1.6% conv.
security door stopper10K/yr -32.7%2.1% conv.
hotel door jammer3K/yr -23.3%3.5% conv.

All search terms

Top door jammer 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

AceMining Upgraded Door Security Bar & Sliding Patio Door Security Bar Heavy Duty Security Door Stoppers Adjustable Door Jammer Security Bar for Home Apartment Travel

AceMining£19.724.6★12,223 rev

DoorJammer Portable Door Lock Brace for Home Security and Personal Protection (DJ3 - DoorJammer (Standard)) Red

Door-Jammer£19.694.4★2,761 rev

Door Stop Lock with Alarm Portable Door Lock & Travel Security Stopper Door Jammer for Hotel Airbnb & Home Home Security & Personal Protection (80dB Alert 535mm Gap)

LUNAVAR£20.094.5★56 rev

Home Security Door Lock Upgraded Metal Door Lock for Child Safety 3 Inch Supports 800lbs Impact for Interior Swing Doors Security Door Lock

Crosize£9.674.6★1,937 rev

Portable Hotel Door Stopper Lock for Travel Safety Door Security 80dB Alarm & Heavy Duty Alloy No Drilling Stopper Dorm Safety Lock Instant Install for Solo Women Girl (red(cr2032battery Include))

nnOuOnn£16.884.9★15 rev

Newest

by launch date

Portable Security Door Lock Stopper Hotel Door Locks for Floor Doors Stopper for Travelers Security Anti Theft Door Blocker Portable Doors Stoppers Locks for Bottom of Door for Home Apartment

DVDVBOOM£11.963 rev

4mo ago

Portable Door Lock for Enhanced Security Lightweight & Easy to Install Anti-Theft Travel Lock for Hotels Homes & Dorms

Torveen£3.138 rev

11mo ago

Pindex 1 Internal Door Security Bar Adjustable Sliding Door Brace Bar 1 1-1 4 m for Patio Sliding Apartment Home Hotel Window White

Pindex£13.239 rev

11mo ago

Portable Hotel Door Stopper Lock for Travel Safety Door Security 80dB Alarm & Heavy Duty Alloy No Drilling Stopper Dorm Safety Lock Instant Install for Solo Women Girl (red(cr2032battery Include))

nnOuOnn£16.8815 rev

1y ago

WENLISELL Adjustable Door Security Bar 50-132cm Removable Sliding Door Security Bar for Home Room Hotel Apartment Travel

WENLISELL£14.136 rev

1y ago

What buyers say about door jammer

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

What buyers love

Quality-Overall14%

“Excellent product”

Locking Mechanism13%

“Brilliant lock easy to use”

Security13%

“Feels secure”

Ease Of Use11%

“Ease of use”

Advertised Vs Actual Product9%

“As advertised”

Strength8%

“Strong stand”

Size-Overall8%

“Fits well”

Value For Money8%

“Good price”

Assembly/Installation2%

“Easy to assemble and set up”

Grip2%

“Definitely none slip”

What buyers complain about

Functionality-Overall15%

“Didn't work”

Locking Mechanism8%

“Hard to unlock”

Quality-Overall8%

“Cheap”

Durability6%

“Broke really easily”

Size-Overall6%

“No fitting”

Noise Level5%

“The 150dB alarm is reassuringly loud”

Adhesion/Stickiness4%

“Works well does the job good value for money they only thing i found it didnt stay on the door very well needs stronger adhesive”

Weight Heavy3%

“Heavier than expected”

Thickness3%

“Only issue is that the thick end of the wedge should be thicker”

Grip3%

“Slip Resistance - The grip on the underside of the device is insufficient for many slippery floor types”

Top return reasons

Size-Overall38%

Compatibility-Overall15%

Functionality-Overall13%

Locking Mechanism4%

Defective Material/Parts3%

Adhesion/Stickiness3%

Mechanism Issues3%

Alarm/Timer Accuracy2%

Quality-Overall2%

Ease Of Use2%

Common questions

Is door jammer profitable to sell on Amazon United Kingdom?: The niche generates £53K/yr across 39 tracked products. 1 of 5 products launched in the last 360 days are still selling. 90-day search growth is -35.3%. Flapen's verdict: Skip it (48/100).
How competitive is the door jammer niche?: 34 brands and 55 sellers compete. The top 5 products take 48% of clicks and top 5 brands hold 51% of demand.
What do buyers complain about in door jammer?: Top complaints mined from reviews: Functionality-Overall, Locking Mechanism, Quality-Overall. The return rate is 1.6%.
What does it cost to enter the door jammer niche?: Listings span £3.13–£40.29; the average listing price is £13.20 (sweet spot $15–$100). The average incumbent carries 1,742 reviews — the moat a new listing must climb.