---
title: "Lock — $8.5M/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/tools-home-improvement/lock"
last_updated: "2026-08-07T19:45:58.359Z"
locale: en
meta:
description: "Niche score 59/100 · $8.5M/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 59/100 · $8.5M/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Lock — $8.5M/yr Amazon US Niche (2026) - Flapen"
---
# **lock**
**Worth a look**
Shows a $8.5M/yr market, but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Market size 100Growth 25Conversion 80Competition 79Returns 70Price range 68Avg price 46Brand share 26Review moat 22Quality gap 38
**Market size**
**Incredible****$8.5M**
$8.5M/yr · 9.0M searches
**Conversion**
**Great****8.2%**
search→purchase rate — share of searches ending in a sale
**Competition**
**Great****36%**
top-5 click share — an open shelf
**Returns**
**Good****2.2%**
return rate — above 5% kills the launch gate
**Price range**
**Good****$5.53–$35.04**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Avg price**
**Okay****$11.47**
avg listing price — sweet spot $15–$100
**Quality gap**
**Okay****4.5★**
avg incumbent rating — lower means beatable quality
**Brand share**
**Okay****89%**
top-5 brand share — brands hold most of the demand
**Growth**
**Bad****-0.7%**
90-day search growth — must beat 0% to launch
**Review moat**
**Bad****8,657.3**
avg incumbent reviews — the moat a new listing must climb
According to Flapen's Amazon United States niche tracking, lock is a $8.5M/yr Amazon United States market (9.0M searches/yr). The top 5 brands hold 89% of demand. Demand peaks in Aug. Verdict: Worth a look — 59/100.
Data updated Jul 27, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **lock market data**
- **Units sold / yr**
- **800K–1.0M**
- avg 15,000–20,000/product
- **Revenue / yr**
- **$9.2M–$11.5M**
- units × avg price
- **Conversion rate**
- **8.2%**
- **Avg BSR**
- **#18**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **89%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **49 months**
- **Avg seller age**
- **154 days**
## **Competition & brand share**
Clicks spread well past the top 5 (36% combined) — an open shelf where new products get seen.
**Brands**
**17 **▼falling
**Sellers**
**185**
**Top-5 brand share**
**89%**
Top 20: 100%
**Top-5 click share**
**36%**
Top 20: 75%
**Open market**
**8%**
- Master Lock37% - Puroma36% - Amazon Basics9% - ZHEGE5% - Fayleeko3% - SEPOX2% - Open — no brand owns it (11 brands, 8%)
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -0.7% search growth over the last 90 days.
300K200KSpike '24Spike '25Prime Day '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Aug · busiest ÷ quietest = 1.9×
[**Open Trend **](https://flapen.com/research/us/tools-home-improvement/lock/trend)
## **Top lock search terms**
- **lock**2.1M/yr-5.0%5.4% conv. - **locker lock**1.3M/yr-16.6%7.1% conv. - **combination lock**948K/yr+9.6%8.5% conv. - **padlock**629K/yr+10.0%5.2% conv. - **master lock**564K/yr+4.0%4.4% conv. - **locks**493K/yr+9.3%2.9% conv. - **locks with keys**304K/yr+61.6%4.2% conv. - **padlock with key**302K/yr+11.4%6.8% conv. - **gym lock**324K/yr-34.2%9.0% conv. - **combo lock**232K/yr+8.6%9.8% conv. [**All search terms **](https://flapen.com/research/us/tools-home-improvement/lock/search-terms)
## **Top 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%$256K6%$512K9%$768K12%$1.0M1001K10K100K Reviews — right = deep review moatMarket 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.
### **Top sellers**
by 90-day click share
[1**Puroma 2 Pack Combination Lock 4 Digit Padlock for School Gym Locker Sports Locker Fence Toolbox Case Hasp Storage (Black & Code Window)**Puroma**$8.74**4.5★33,990 rev](https://www.amazon.com/dp/B075DFPR2W) [2**Amazon Basics 4-Digit Combination Lock Black 2-Pack**Amazon Basics**$8.26**4.4★7,965 rev](https://www.amazon.com/dp/B07T2C3QNZ) [3**Master Lock 1530DCM Locker Lock Combination Padlock 1 Count (Pack of 1) Colors May Vary**Master Lock**$6.20**4.6★16,907 rev](https://www.amazon.com/dp/B00005JSBK) [4**Puroma 1 Pack Combination Lock for Locker 4 Digit Outdoor Waterproof Padlock for School Gym Sports Fence Toolbox Gate Case Outdoor Hasp Storage Cabinets (Black)**Puroma**$7.15**4.5★33,990 rev](https://www.amazon.com/dp/B0B7W9FVG2) [5**Puroma 1 Pack Combination Lock for Locker 4 Digit Outdoor Waterproof Padlock for School Gym Sports Fence Toolbox Gate Case Outdoor Hasp Storage (Purple)**Puroma**$7.09**4.5★33,990 rev](https://www.amazon.com/dp/B0CJF2M6FT)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Puroma Combination Lock 4 Digit Waterproof Locker Locks Secure Outdoor Padlock for Gym Lockers Toolboxes Gates Fences Storage Sports Locker Cabinets (Basic Pink Rose)**Puroma**$7.00**1,220 rev1y ago](https://www.amazon.com/dp/B0DZ2HH1L4) [**Puroma Keyed Padlock with 2 Keys Alike 7/8 Inch Locker Lock 40mm Heavy-Duty Locks for School Gym Locker Gate Fence Hasp Cabinet Toolbox (Pink)**Puroma**$6.73**4,391 rev1y ago](https://www.amazon.com/dp/B0DYP2F4G4) [**Puroma 1 Pack Combination Lock for Locker 4 Digit Outdoor Waterproof Padlock for School Gym Sports Fence Toolbox Gate Case Outdoor Hasp Storage (Purple)**Puroma**$7.09**33,990 rev2y ago](https://www.amazon.com/dp/B0CJF2M6FT) [**Puroma 1 Pack Combination Lock for Locker 4 Digit Outdoor Waterproof Padlock for School Gym Sports Fence Toolbox Gate Case Outdoor Hasp Storage (Pink)**Puroma**$7.07**33,990 rev2y ago](https://www.amazon.com/dp/B0CJF8717Q) [**ZHEGE Combination Lock Gym Locker Lock 4 Digit Combination Padlock (Pink)**ZHEGE**$7.01**18,329 rev3y ago](https://www.amazon.com/dp/B0BLGQZ676)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Puroma Keyed Padlock with 2 Keys Alike 7/8 Inch Locker Lock 40mm Heavy-Duty Locks for School Gym Locker Gate Fence Hasp Cabinet Toolbox (Pink)**Puroma**$6.73**4.6★**▲ 167%**](https://www.amazon.com/dp/B0DYP2F4G4) [**Puroma 1 Pack Combination Lock for Locker 4 Digit Outdoor Waterproof Padlock for School Gym Sports Fence Toolbox Gate Case Outdoor Hasp Storage (Pink)**Puroma**$7.07**4.5★**▲ 136%**](https://www.amazon.com/dp/B0CJF8717Q) [**Puroma 1 Pack Combination Lock for Locker 4 Digit Outdoor Waterproof Padlock for School Gym Sports Fence Toolbox Gate Case Outdoor Hasp Storage Cabinets (Black)**Puroma**$7.15**4.5★**▲ 116%**](https://www.amazon.com/dp/B0B7W9FVG2) [**Master Lock Combination Lock Heavy Duty Weatherproof Padlock Resettable for Outdoor Use Brass Finish M175XDLF**Master Lock**$21.95**4.4★**▲ 78%**](https://www.amazon.com/dp/B000WEIIQC) [**Master Lock Magnum Heavy Duty Outdoor Padlock with Key Weather Resistant Body and Cut Safe Shackle Make Lock Perfect for Fences Gates Sheds M115XKADLF Black**Master Lock**$14.46**4.6★**▲ 41%**](https://www.amazon.com/dp/B000RFLNG8)
**~~View all trending →~~**
## **What buyers say about lock**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Locking Mechanism**30%
*“Secure Locks”*
**Quality-Overall**11%
*“Build quality feels solid”*
**Ease Of Use**10%
*“Easy to open”*
**Value For Money**7%
*“Great deal”*
**Advertised Vs Actual Product**7%
*“As advertised”*
**Strength**5%
*“solid, easy to set”*
**Size-Overall**4%
*“Love it fit for what I needed it for”*
**Efficiency**3%
*“It works fine”*
**Assembly/Installation**3%
*“Easy to install”*
**Durability**3%
*“Great durable budget choice”*
### **What buyers complain about **
**Locking Mechanism**25%
*“Defective Lock”*
**Quality-Overall**10%
*“Bad quality”*
**Durability**10%
*“Fell apart”*
**Functionality-Overall**6%
*“Didn't work”*
**Size-Overall**5%
*“was too short to fit on my 15 foot U-Haul truck”*
**Rusts/Corrodes**5%
*“rusted within a month”*
**Ease Of Use**5%
*“Difficult to operate”*
**Advertised Vs Actual Product**3%
*“Very deceiving”*
**Instructions/User Manual/Troubleshooting**3%
*“the instructions are terrible”*
**Value For Money**2%
*“Ehhh kinda cheap”*
### **Top return reasons **
**Size-Overall**41%
**Locking Mechanism**24%
**Functionality-Overall**8%
**Value For Money**5%
**Advertised Vs Actual Product**3%
**Mechanism Issues**2%
**Defective Material/Parts**2%
**Weight Heavy**2%
**Thickness**1%
**Quality-Overall**1%
## **Common questions**
- **Is lock profitable to sell on Amazon United States?**
- The niche generates $8.5M/yr across 54 tracked products. 3 of 3 products launched in the last 360 days are still selling. 90-day search growth is -0.7%. Flapen's verdict: Worth a look (59/100).
- **How competitive is the lock niche?**
- 17 brands and 185 sellers compete. The top 5 products take 36% of clicks and top 5 brands hold 89% of demand.
- **What do buyers complain about in lock?**
- Top complaints mined from reviews: Locking Mechanism, Quality-Overall, Durability. The return rate is 2.2%.
- **When does demand for lock peak?**
- Demand peaks in Aug; the busiest month runs 1.9× the quietest.
- **What does it cost to enter the lock niche?**
- Listings span $5.53–$35.04; the average listing price is $11.47 (sweet spot $15–$100). The average incumbent carries 8,657 reviews — the moat a new listing must climb.
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