Is multiple locks with same key profitable to sell on Amazon United States?

The niche generates $79K/yr across 62 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is +4.2%. Flapen's verdict: Worth a look (50/100).

How competitive is the multiple locks with same key niche?

20 brands and 96 sellers compete. The top 5 products take 33% of clicks and top 5 brands hold 80% of demand.

What do buyers complain about in multiple locks with same key?

Top complaints mined from reviews: Locking Mechanism, Rusts/Corrodes, Quality-Overall. The return rate is 3.1%.

When does demand for multiple locks with same key peak?

Demand peaks in Aug–Oct; the busiest month runs 2.0× the quietest.

What does it cost to enter the multiple locks with same key niche?

Listings span $6.99–$133.91; the average listing price is $33.39 (sweet spot $15–$100). The average incumbent carries 2,364 reviews — the moat a new listing must climb.

multiple locks with same key

Worth a look

Shows a sweet-spot price point ($33.39 avg), but a small market ($79K/yr) keeps it on the watch list.

Avg price

Incredible$33.39

avg listing price — sweet spot $15–$100

Competition

Great33%

top-5 click share — an open shelf

Conversion

Good6.5%

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

Price range

Good$6.99–$133.91

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

Returns

Okay3.1%

return rate — above 5% kills the launch gate

Quality gap

Okay4.5★

avg incumbent rating — lower means beatable quality

Brand share

Okay80%

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

Review moat

Okay2,364

avg incumbent reviews — the moat a new listing must climb

Growth

Okay+4.2%

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

Market size

Bad$79K

$79K/yr · 36K searches

According to Flapen's Amazon United States niche tracking, multiple locks with same key is a $79K/yr Amazon United States market (36K searches/yr). The top 5 brands hold 80% of demand. Demand peaks in Aug–Oct. Verdict: Worth a look — 50/100.

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

multiple locks with same key market data

Units sold / yr: 3K–3K; avg 0–100/product
Revenue / yr: $83K–$100K; units × avg price
Conversion rate: 6.5%
Avg BSR: #103
Page quality: 0%
Prime: 97%
Sponsored: 81%
Out of stock: 1.8%
Avg brand age: 47 months
Avg seller age: 158 days

Competition & brand share

Clicks spread well past the top 5 (33% combined) — an open shelf where new products get seen.

Brands

20 rising

Sellers

Top-5 brand share

80%

Top 20: 100%

Top-5 click share

33%

Top 20: 68%

Open market

17%

Master Lock56%
SafiSwords9%
Puroma7%
CINCINNO5%
SEPOX4%
XanHen3%
Open — no brand owns it (14 brands, 17%)

Demand & seasonality

Weekly Amazon search volume, last 102 weeks — +4.2% search growth over the last 90 days.

Peak months: Aug, Oct · busiest ÷ quietest = 2.0×

Open Trend

Top multiple locks with same key search terms

4 locks with same key8K/yr +1.8%6.7% conv.
master lock keyed alike7K/yr +29.5%3.0% conv.
3 locks with same key7K/yr +4.5%8.0% conv.
master lock 4 pack8K/yr -2.5%6.3% conv.
6 locks with same key3K/yr +10.8%6.1% conv.
pad locks with same key 6 pack3K/yr -27.1%4.7% conv.

All search terms

Top multiple locks with same key 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

Master Lock Black Key Lock Heavy Duty Weather Resistant Padlock with Cover Keyed Alike Padlocks for Outdoor Use 4 Pack M115XQLF

Master Lock$37.044.6★12,340 rev

Master Lock Black Outdoor Key Lock Standard Weather Resistant Padlock with Cover Keyed Alike Padlocks for Lockers Fences Sheds or Other Equipment 4 Pack 131Q

Master Lock$20.124.6★6,713 rev

SafiSwords Waterproof Padlocks Keyed Alike for Outdoor use Covered Heavy Duty Laminated Steel Lock 1-9/16 Inch. Wide Long Padlock Pack of 6

SafiSwords$29.454.4★1,446 rev

Master Lock Black Magnum Keyed-Alike Padlocks with All-Weather Cover Outdoor Lock for Fence or Gate with a 1-7/8 Inch Lock Body and 1-1/2 Inch Shackle 3-Pack

Master Lock$27.754.6★12,340 rev

Puroma 4 Pack Keyed Padlock with 6 Keys Alike 1.1 Inch Locker Lock 40mm Heavy-Duty Locks for Gate Fence Hasp Cabinet Toolbox School Gym Locker (Black)

Puroma$17.104.6★4,391 rev

Newest

by launch date

3 Pack Outdoor Waterproof Padlocks with Key 1.5 Keyed Alike

ZEERSHEE$15.10147 rev

1y ago

SEPOX Trinity Keyed-Alike Padlocks Outdoor Reinforced Laminated Steel Body Heavy-Duty 1-9/16 40MM Uncuttable Standard Shackle 3-Pcs-Lock 6-Pcs Same Keys for Gym Locker Toolbox Shed Storage

SEPOX$13.50288 rev

2y ago

Lock Outdoor Padlocks Key Lock Padlocks with Same Key - Laminated Steel Keyed Padlocks with Long Shackle 6 Pack for Hasp Latch Sheds Fences Storage Locker School Gym

XanHen$20.71242 rev

2y ago

SafiSwords 8-Pack Keyed Alike Laminated Steel Padlocks Keys 1-3/4 Wide Heavy Duty Long Pad Lock Set with Same Keys

SafiSwords$31.35258 rev

3y ago

Puroma 4 Pack Keyed Padlock with 6 Keys Alike 1.1 Inch Locker Lock 40mm Heavy-Duty Locks for Gate Fence Hasp Cabinet Toolbox School Gym Locker (Black)

Puroma$17.104,391 rev

3y ago

What buyers say about multiple locks with same key

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

What buyers love

Locking Mechanism37%

“Great Pad Locks”

Quality-Overall14%

“Excellent product”

Value For Money13%

“Excellent price”

Advertised Vs Actual Product6%

“Exactly as described”

Size-Overall4%

“Fit well”

Strength4%

“Super heavy duty locks”

Durability3%

“well made and durable”

Security3%

“Solid and Secure”

Ease Of Use2%

“Easy to use”

Efficiency1%

“Works great”

What buyers complain about

Locking Mechanism19%

“they would not lock”

Rusts/Corrodes16%

“are completely rusted”

Quality-Overall9%

“Not quality”

Durability8%

“Had it for two weeks”

Size-Overall8%

“Too small”

Value For Money5%

“I see why they are cheap”

Ease Of Use4%

“Terrible to use”

Advertised Vs Actual Product3%

“Not as described”

Water Resistance3%

“However, as some reviews have stated, the waterproof cap does not work well”

Strength3%

“They seem to be pretty flimsy”

Top return reasons

Size-Overall61%

Locking Mechanism14%

Advertised Vs Actual Product6%

Value For Money3%

Functionality-Overall3%

Quality-Overall2%

Defective Material/Parts2%

Weight Heavy2%

Thickness1%

Compatibility-Overall1%

Common questions

Is multiple locks with same key profitable to sell on Amazon United States?: The niche generates $79K/yr across 62 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is +4.2%. Flapen's verdict: Worth a look (50/100).
How competitive is the multiple locks with same key niche?: 20 brands and 96 sellers compete. The top 5 products take 33% of clicks and top 5 brands hold 80% of demand.
What do buyers complain about in multiple locks with same key?: Top complaints mined from reviews: Locking Mechanism, Rusts/Corrodes, Quality-Overall. The return rate is 3.1%.
When does demand for multiple locks with same key peak?: Demand peaks in Aug–Oct; the busiest month runs 2.0× the quietest.
What does it cost to enter the multiple locks with same key niche?: Listings span $6.99–$133.91; the average listing price is $33.39 (sweet spot $15–$100). The average incumbent carries 2,364 reviews — the moat a new listing must climb.