---
title: "Mx Master 3s Case — $71K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/electronics/mx-master-3s-case"
last_updated: "2026-08-09T15:48:18.585Z"
locale: en
meta:
description: "Niche score 31/100 · $71K/yr market · 45K searches/yr · $13.76 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 31/100 · $71K/yr market · 45K searches/yr · $13.76 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Mx Master 3s Case — $71K/yr Amazon US Niche (2026) - Flapen"
---
# **mx master 3s case**
**Skip it**
Brand-locked demand (top 5 brands take 100% of clicks) — this niche doesn't clear our bar today.
Market size 18Growth 18Conversion 93Competition 3Returns 76Price range 33Avg price 65Brand share 0Review moat 43Quality gap 17
**Conversion**
**Great****11.4%**
search→purchase rate — share of searches ending in a sale
**Returns**
**Great****2.0%**
return rate — above 5% kills the launch gate
**Avg price**
**Good****$13.76**
avg listing price — sweet spot $15–$100
**Review moat**
**Okay****2,165**
avg incumbent reviews — the moat a new listing must climb
**Price range**
**Okay****$8.96–$17.96**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Market size**
**Bad****$71K**
$71K/yr · 45K searches
**Growth**
**Bad****-13.2%**
90-day search growth — must beat 0% to launch
**Quality gap**
**Bad****4.7★**
avg incumbent rating — lower means beatable quality
**Competition**
**Bad****97%**
top-5 click share — a locked-up shelf
**Brand share**
**Bad****100%**
top-5 brand share — brand-locked demand
According to Flapen's Amazon United States niche tracking, mx master 3s case is a $71K/yr Amazon United States market (45K searches/yr). The top 5 brands hold 100% of demand. Demand peaks in Jan–Aug–Dec. Verdict: Skip it — 31/100.
Data updated Jul 21, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **mx master 3s case market data**
- **Units sold / yr**
- **4K–5K**
- avg 500–750/product
- **Revenue / yr**
- **$55K–$69K**
- units × avg price
- **Conversion rate**
- **11.4%**
- **Avg BSR**
- **#349**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **100%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **38 months**
- **Avg seller age**
- **190 days**
## **Competition & brand share**
The top 5 products capture 97% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**5 **▼falling
**Sellers**
**14**
**Top-5 brand share**
**100%**
Top 20: 100%
**Top-5 click share**
**97%**
Top 20: 100%
**Open market**
**0%**
- co2CREA59% - Hermitshell24% - Lebakort7% - Mckgute6% - Klawdsky3%
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -13.2% search growth over the last 90 days.
3K2KSpike '24Holiday '24Prime Day '25Spike '25Holiday '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Jan, Aug, Dec · busiest ÷ quietest = 2.5×
[**Open Trend **](https://flapen.com/research/us/electronics/mx-master-3s-case/trend)
## **Top mx master 3s case search terms**
- **mx master 4 case**15K/yr-10.6%9.4% conv. - **logitech mx master 4 case**8K/yr-12.5%9.3% conv. - **mx master 3s case**10K/yr-8.7%8.6% conv. - **logitech mx master 3s case**8K/yr-24.7%9.6% conv. - **mx master case**4K/yr-18.9%10.5% conv. [**All search terms **](https://flapen.com/research/us/electronics/mx-master-3s-case/search-terms)
## **Top mx master 3s case 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%15%$11K30%$21K45%$32K60%$43K101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 6 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**co2CREA Hard Case Replacement for Logitech MX Master 4 / MX Master 3 Master 3S Advanced Wireless Mouse (Graphite Black Case)**co2CREA**$16.94**4.8★4,834 rev](https://www.amazon.com/dp/B0B1D9LXY6) [2**Hermitshell Hard Travel Case for Logitech MX Master 4 / MX Master 3 /MX Master 3S Advanced Wireless Mouse-2.0 Upgrade Version No Shake (Black)**Hermitshell**$13.50**4.8★2,682 rev](https://www.amazon.com/dp/B082D8LSD9) [3**Lebakort Storage Case Compatible with Logitech MX Master 4 / MX Master 3S / MX Master 3 / MX Matser 2S Advanced Mouse (Graphite Case)**Lebakort**$15.86**4.8★445 rev](https://www.amazon.com/dp/B0CZX91VV8) [4**Mckgute Travel Carrying Case Replacement for Logitech MX Master 4 / MX Master 3S / Master 3 / Master 2S Advanced Computer Wireless Mouse- Upgrade Version No Shake**Mckgute**$9.37**4.6★22 rev](https://www.amazon.com/dp/B0FPCPNHSV) [5**Hard Mouse Case for Logitech MX Master 3S/3 Upgrade Version No Shake(Case Only)**Klawdsky**$8.96**4.6★173 rev](https://www.amazon.com/dp/B0CYL4VVFK)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Mckgute Travel Carrying Case Replacement for Logitech MX Master 4 / MX Master 3S / Master 3 / Master 2S Advanced Computer Wireless Mouse- Upgrade Version No Shake**Mckgute**$9.37**22 rev10mo ago](https://www.amazon.com/dp/B0FPCPNHSV) [**Lebakort Storage Case Compatible with Logitech MX Master 4 / MX Master 3S / MX Master 3 / MX Matser 2S Advanced Mouse (Graphite Case)**Lebakort**$15.86**445 rev2y ago](https://www.amazon.com/dp/B0CZX91VV8) [**Hard Mouse Case for Logitech MX Master 3S/3 Upgrade Version No Shake(Case Only)**Klawdsky**$8.96**173 rev2y ago](https://www.amazon.com/dp/B0CYL4VVFK) [**co2CREA Hard Case Replacement for Logitech MX Master 4 / MX Master 3 Master 3S Advanced Wireless Mouse (Graphite Black Case)**co2CREA**$16.94**4,834 rev4y ago](https://www.amazon.com/dp/B0B1D9LXY6) [**co2CREA Hard Case Replacement for Logitech MX Master 4 / MX Master 3 / Master 3S Advanced Wireless Mouse (Mid Grey Case)**co2CREA**$17.96**4,834 rev4y ago](https://www.amazon.com/dp/B0B1D9QJQC)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**co2CREA Hard Case Replacement for Logitech MX Master 4 / MX Master 3 / Master 3S Advanced Wireless Mouse (Mid Grey Case)**co2CREA**$17.96**4.8★**▲ 107%**](https://www.amazon.com/dp/B0B1D9QJQC) [**Mckgute Travel Carrying Case Replacement for Logitech MX Master 4 / MX Master 3S / Master 3 / Master 2S Advanced Computer Wireless Mouse- Upgrade Version No Shake**Mckgute**$9.37**4.6★**▲ 66%**](https://www.amazon.com/dp/B0FPCPNHSV) [**co2CREA Hard Case Replacement for Logitech MX Master 4 / MX Master 3 Master 3S Advanced Wireless Mouse (Graphite Black Case)**co2CREA**$16.94**4.8★**▲ 19%**](https://www.amazon.com/dp/B0B1D9LXY6) [**Lebakort Storage Case Compatible with Logitech MX Master 4 / MX Master 3S / MX Master 3 / MX Matser 2S Advanced Mouse (Graphite Case)**Lebakort**$15.86**4.8★**— 6%**](https://www.amazon.com/dp/B0CZX91VV8) [**Hermitshell Hard Travel Case for Logitech MX Master 4 / MX Master 3 /MX Master 3S Advanced Wireless Mouse-2.0 Upgrade Version No Shake (Black)**Hermitshell**$13.50**4.8★**▼ 26%**](https://www.amazon.com/dp/B082D8LSD9)
**~~View all trending →~~**
## **What buyers say about mx master 3s case**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**21%
*“Very good quality”*
**Drop/Impact Protection**17%
*“Protective”*
**Size-Overall**15%
*“Perfect fit”*
**Compatibility-Overall**8%
*“Buen producto, compatible”*
**Strength**6%
*“sturdy as well”*
**Design-Overall**3%
*“Excellent, well made case”*
**Product Condition**3%
*“it is completely new”*
**Material Quality**3%
*“The outside material is durable”*
**Durability**3%
*“it doesn't show any wear after almost a full year of use”*
**Portability**2%
*“its easy to throw into a backpack or carry-on for work or travel”*
### **What buyers complain about **
**Smell**20%
*“Smelled of Burnt Plastic”*
**Compatibility-Overall**20%
*“DOES NOT FIT MX4”*
**Size-Overall**14%
*“TOO SMALL”*
**Advertised Vs Actual Product**10%
*“False advertising”*
**Value For Money**4%
*“For a case that was 2x the price of some of the competition”*
**Strength**2%
*“The case is rigid”*
**Flexibility**2%
*“it is more rigid than I was expecting”*
**Charging**2%
*“I wish there was room for a small charging cable”*
**Touch/Button Controls**2%
*“the top button is left out”*
**Design-Overall**1%
*“Its a shame because the design or function couldve been good”*
### **Top return reasons **
**Size-Overall**46%
**Compatibility-Overall**15%
**Smell**14%
**Advertised Vs Actual Product**6%
**Value For Money**3%
**Quality-Overall**3%
**Material Quality**2%
**Touch/Button Controls**1%
**Weight Heavy**1%
**Design-Overall**1%
## **Common questions**
- **Is mx master 3s case profitable to sell on Amazon United States?**
- The niche generates $71K/yr across 6 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is -13.2%. Flapen's verdict: Skip it (31/100).
- **How competitive is the mx master 3s case niche?**
- 5 brands and 14 sellers compete. The top 5 products take 97% of clicks and top 5 brands hold 100% of demand.
- **What do buyers complain about in mx master 3s case?**
- Top complaints mined from reviews: Smell, Compatibility-Overall, Size-Overall. The return rate is 2.0%.
- **When does demand for mx master 3s case peak?**
- Demand peaks in Jan–Aug–Dec; the busiest month runs 2.5× the quietest.
- **What does it cost to enter the mx master 3s case niche?**
- Listings span $8.96–$17.96; the average listing price is $13.76 (sweet spot $15–$100). The average incumbent carries 2,165 reviews — the moat a new listing must climb.
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