---
title: "Mason Jars 12 Oz — $277K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/home-kitchen/mason-jars-12-oz"
last_updated: "2026-08-10T22:13:18.868Z"
locale: en
meta:
description: "Niche score 59/100 · $277K/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Aug 2026."
"og:description": "Niche score 59/100 · $277K/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Aug 2026."
"og:title": "Mason Jars 12 Oz — $277K/yr Amazon US Niche (2026) - Flapen"
---
# **mason jars 12 oz**
**Worth a look**
Shows a sweet-spot price point ($22.18 avg), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Market size 50Growth 36Conversion 59Competition 76Returns 80Price range 70Avg price 93Brand share 85Review moat 40Quality gap 25
**Avg price**
**Great****$22.18**
avg listing price — sweet spot $15–$100
**Brand share**
**Great****50%**
top-5 brand share — no brand owns this niche
**Returns**
**Great****1.8%**
return rate — above 5% kills the launch gate
**Competition**
**Great****39%**
top-5 click share — an open shelf
**Price range**
**Good****$8.98–$29.36**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Conversion**
**Good****5.1%**
search→purchase rate — share of searches ending in a sale
**Market size**
**Good****$277K**
$277K/yr · 246K searches
**Review moat**
**Okay****2,505.43**
avg incumbent reviews — the moat a new listing must climb
**Growth**
**Okay****+8.7%**
90-day search growth — must beat 0% to launch
**Quality gap**
**Okay****4.6★**
avg incumbent rating — lower means beatable quality
**Signals**[** No Dominant Brand**](https://flapen.com/research/niches?market=us&signal=no_dominant_brand "Top brand's click share < 20%")
According to Flapen's Amazon United States niche tracking, mason jars 12 oz is a $277K/yr Amazon United States market (246K searches/yr). The top 5 brands hold 50% of demand. Demand peaks in Aug–Sep. Verdict: Worth a look — 59/100.
Data updated Aug 5, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **mason jars 12 oz market data**
- **Units sold / yr**
- **13K–15K**
- avg 250–500/product
- **Revenue / yr**
- **$277K–$333K**
- units × avg price
- **Conversion rate**
- **5.1%**
- **Avg BSR**
- **#189**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **90%**
- **Out of stock**
- **3.5%**
- **Avg brand age**
- **36 months**
- **Avg seller age**
- **159 days**
## **Competition & brand share**
Clicks spread well past the top 5 (39% combined) — an open shelf where new products get seen.
**Brands**
**28 **▼falling
**Sellers**
**48**
**Top-5 brand share**
**50%**
Top 20: 95%
**Top-5 click share**
**39%**
Top 20: 81%
**Open market**
**43%**
- Rainforce17% - ComSaf10% - SZUAH9% - Keketin8% - VERONES8% - Ball7%
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — +8.7% search growth over the last 90 days.
7K5KHoliday '24Spike '25Prime Day '25 seasonSepDecMarJunAugNovMarMay
Peak months: Aug, Sep · busiest ÷ quietest = 1.7×
[**Open Trend **](https://flapen.com/research/us/home-kitchen/mason-jars-12-oz/trend)
## **Top mason jars 12 oz search terms**
- **12 oz mason jars**35K/yr+15.2%4.5% conv. - **mason jars 12 oz**32K/yr+13.6%5.8% conv. - **12 oz mason jars with lids**26K/yr-4.7%4.9% conv. - **12 oz jars with lids**20K/yr-3.9%3.0% conv. - **12oz mason jars**13K/yr+14.8%4.2% conv. - **12oz mason jars with lids**13K/yr-7.3%3.3% conv. - **12 oz jars**12K/yr-5.4%3.8% conv. - **mason jar 12 oz**10K/yr+14.1%3.9% conv. - **12 oz canning jars**9K/yr+74.9%5.3% conv. - **12 oz mason jar**8K/yr+18.6%3.9% conv. [**All search terms **](https://flapen.com/research/us/home-kitchen/mason-jars-12-oz/search-terms)
## **Top mason jars 12 oz 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%$8K6%$17K9%$25K12%$33K1001K10K100K 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**ComSaf 12 oz Mason Jars 6 Pack Regular Mouth Glass Jars with Lids**ComSaf**$16.39**4.7★4,848 rev](https://www.amazon.com/dp/B0DRYH5PGB) [2**12 oz Mason Jars with Lids 20 Pack Clear Canning Jars for Food Storage**SZUAH**$25.02**4.7★1,185 rev](https://www.amazon.com/dp/B0G4LG9SP3) [3**Rainforce Mason Jars 12 oz Regular Mouth 6 Pack 12 oz Glass Jars with Silver Lids for Canning Honey Spices Candle Making Pint Storage & Meal Prep Frascos De Vidrio Con Tapa**Rainforce**$16.47**4.4★168 rev](https://www.amazon.com/dp/B0FRSGJ8NF) [4**Rainforce Mason Jars 12 oz 20 Pack Glass Jars with Silver Lids food Storage**Rainforce**$27.16**4.6★1,760 rev](https://www.amazon.com/dp/B08KZYLCPP) [5**CycleMore 20 Pcs 12oz Glass Mason Jars With Silver Separable Lids**CycleMore**$26.95**4.6★1,613 rev](https://www.amazon.com/dp/B0932ZJ16X)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**12 oz Mason Jars with Lids 20 Pack Clear Canning Jars for Food Storage**SZUAH**$25.02**1,185 rev6mo ago](https://www.amazon.com/dp/B0G4LG9SP3) [**STARSIDE 12oz Glass Embossed Mason Jars 20-Pack with Airtight Split Lids**STARSIDE**$27.16**199 rev7mo ago](https://www.amazon.com/dp/B0GCZBX4R3) [**Danmu 12 oz Overnight Oats Containers with Lids Glass Jars with Lids 4 Pack**Danmu**$16.16**119 rev7mo ago](https://www.amazon.com/dp/B0GCHJZZC3) [**Rainforce Mason Jars 12 oz Regular Mouth 6 Pack 12 oz Glass Jars with Silver Lids for Canning Honey Spices Candle Making Pint Storage & Meal Prep Frascos De Vidrio Con Tapa**Rainforce**$16.47**168 rev10mo ago](https://www.amazon.com/dp/B0FRSGJ8NF) [**12 oz Regular Mouth Mason Jar with Airtight Lid 20 Pack Glass Canning Jars**Keketin**$23.55**155 rev11mo ago](https://www.amazon.com/dp/B0FMRQRDJW)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Danmu 12 oz Overnight Oats Containers with Lids Glass Jars with Lids 4 Pack**Danmu**$16.16**4.6★**▲ 245%**](https://www.amazon.com/dp/B0GCHJZZC3) [**STARSIDE 12oz Glass Embossed Mason Jars 20-Pack with Airtight Split Lids**STARSIDE**$27.16**4.7★**▲ 166%**](https://www.amazon.com/dp/B0GCZBX4R3) [**12 oz Mason Jars with Lids 20 Pack Clear Canning Jars for Food Storage**SZUAH**$25.02**4.7★**▲ 109%**](https://www.amazon.com/dp/B0G4LG9SP3) [**12 oz Regular Mouth Mason Jar with Airtight Lid 15 Pack Glass Canning Jars**Keketin**$21.70**4.6★**▲ 90%**](https://www.amazon.com/dp/B0F5WB21RY) [**12 oz Mason Jars with Airtight Lids and Bands 20 Pack Glass Canning Jars**Keketin**$24.04**4.6★**▲ 58%**](https://www.amazon.com/dp/B0DFCG7N5R)
**~~View all trending →~~**
## **What buyers say about mason jars 12 oz**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**19%
*“Nice quality and keeps things fresh”*
**Size-Overall**18%
*“Love the size”*
**Advertised Vs Actual Product**11%
*“As advertised”*
**Value For Money**10%
*“Great deal”*
**Durability**5%
*“hold up nice”*
**Strength**5%
*“Sturdy, cute, and easy to clean”*
**Leak-Proof**4%
*“Does not leak”*
**Color**4%
*“Cute colors”*
**Storage Capacity**3%
*“Awesome space saver”*
**Ease Of Cleaning**2%
*“are easily washable”*
### **What buyers complain about **
**Size-Overall**18%
*“These are small jars”*
**Rusts/Corrodes**10%
*“Rusty”*
**Durability**8%
*“Break easily”*
**Quality-Overall**7%
*“Bad quality”*
**Ease Of Use**5%
*“Very hard to open”*
**Value For Money**5%
*“They are cheaper here”*
**Leak-Proof**5%
*“they leak everywhere”*
**Ease Of Cleaning**3%
*“Hard to clean”*
**Thickness**3%
*“Nice jars for the money not as thick as Ball Jars”*
**Advertised Vs Actual Product**3%
*“Does not meet product discription”*
### **Top return reasons **
**Size-Overall**73%
**Value For Money**8%
**Advertised Vs Actual Product**6%
**Quality-Overall**2%
**Functionality-Overall**1%
**Leak-Proof**1%
**Dishwasher Safe**1%
**Material Quality**1%
**Smell**1%
**Color**1%
## **Common questions**
- **Is mason jars 12 oz profitable to sell on Amazon United States?**
- The niche generates $277K/yr across 42 tracked products. 7 of 11 products launched in the last 360 days are still selling. 90-day search growth is +8.7%. Flapen's verdict: Worth a look (59/100).
- **How competitive is the mason jars 12 oz niche?**
- 28 brands and 48 sellers compete. The top 5 products take 39% of clicks and top 5 brands hold 50% of demand.
- **What do buyers complain about in mason jars 12 oz?**
- Top complaints mined from reviews: Size-Overall, Rusts/Corrodes, Durability. The return rate is 1.8%.
- **When does demand for mason jars 12 oz peak?**
- Demand peaks in Aug–Sep; the busiest month runs 1.7× the quietest.
- **What does it cost to enter the mason jars 12 oz niche?**
- Listings span $8.98–$29.36; the average listing price is $22.18 (sweet spot $15–$100). The average incumbent carries 2,505 reviews — the moat a new listing must climb.
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