---
title: "4 Oz Glass Jars with Lids — $1.2M/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/home-kitchen/4-oz-glass-jars-with-lids"
last_updated: "2026-08-09T09:00:52.973Z"
locale: en
meta:
description: "Niche score 64/100 · $1.2M/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 64/100 · $1.2M/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Aug 2026."
"og:title": "4 Oz Glass Jars with Lids — $1.2M/yr Amazon US Niche (2026) - Flapen"
---
# **4 oz glass jars with lids**
**Worth a look**
Shows no brand lock-in (top 5 brands take 29% of clicks), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Market size 82Growth 22Conversion 57Competition 92Returns 70Price range 68Avg price 84Brand share 96Review moat 49Quality gap 21
**Brand share**
**Incredible****29%**
top-5 brand share — no brand owns this niche
**Competition**
**Great****23%**
top-5 click share — an open shelf
**Avg price**
**Great****$18.64**
avg listing price — sweet spot $15–$100
**Market size**
**Great****$1.2M**
$1.2M/yr · 1.4M searches
**Returns**
**Good****2.2%**
return rate — above 5% kills the launch gate
**Price range**
**Good****$5.03–$36.20**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Conversion**
**Good****4.8%**
search→purchase rate — share of searches ending in a sale
**Review moat**
**Okay****1,626.83**
avg incumbent reviews — the moat a new listing must climb
**Growth**
**Bad****-7.0%**
90-day search growth — must beat 0% to launch
**Quality gap**
**Bad****4.7★**
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, 4 oz glass jars with lids is a $1.2M/yr Amazon United States market (1.4M searches/yr). The top 5 brands hold 29% of demand. Demand peaks in May–Dec. Verdict: Worth a look — 64/100.
Data updated Aug 5, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **4 oz glass jars with lids market data**
- **Units sold / yr**
- **60K–80K**
- avg 750–1,000/product
- **Revenue / yr**
- **$1.1M–$1.5M**
- units × avg price
- **Conversion rate**
- **4.8%**
- **Avg BSR**
- **#94**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **87%**
- **Out of stock**
- **0.3%**
- **Avg brand age**
- **39 months**
- **Avg seller age**
- **173 days**
## **Competition & brand share**
Clicks spread well past the top 5 (23% combined) — an open shelf where new products get seen.
**Brands**
**58 **▲rising
**Sellers**
**79**
**Top-5 brand share**
**29%**
Top 20: 70%
**Top-5 click share**
**23%**
Top 20: 52%
**Open market**
**66%**
- ComSaf9% - MaxMau6% - AOZITA5% - Bumobum4% - Accguan4% - PureRoot4%
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -7.0% search growth over the last 90 days.
50K30KBlack Friday '24Holiday '24Spike '25Black Friday '25Holiday '25 seasonSepDecMarJunAugNovMarMay
Peak months: May, Dec · busiest ÷ quietest = 1.8×
[**Open Trend **](https://flapen.com/research/us/home-kitchen/4-oz-glass-jars-with-lids/trend)
## **Top 4 oz glass jars with lids search terms**
- **4 oz glass jars with lids**217K/yr-16.8%3.8% conv. - **4oz glass jars with lids**177K/yr-5.1%4.0% conv. - **mini jars**116K/yr+13.8%2.0% conv. - **2 oz glass jars with lids**127K/yr-16.6%3.9% conv. - **2oz glass jars with lids**117K/yr-23.8%3.7% conv. - **mini glass jars**80K/yr+6.3%1.8% conv. - **mini jars with lids**80K/yr-1.9%1.6% conv. - **small glass bottles with lids**59K/yr-12.0%1.8% conv. - **tiny glass jars**35K/yr+8.9%2.1% conv. - **tiny jars**34K/yr+12.5%2.1% conv. [**All search terms **](https://flapen.com/research/us/home-kitchen/4-oz-glass-jars-with-lids/search-terms)
## **Top 4 oz glass jars with lids 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%2%$25K4%$49K6%$74K8%$98K101001K10K100K 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 Mini Mason Jars 4 oz 8 Pack Regular Mouth Glass Jars with Lids**ComSaf**$11.93**4.7★4,848 rev](https://www.amazon.com/dp/B09YRC9SXW) [2**AOZITA 12 Pack 2 oz Small Clear Glass Bottles w/Lid & 3 Funnels - 60ml Boston Shot Bottles for Health Immunity Potion Wellness Sample Ginger Juice - Mini Personal Care & Beauty Travel Bottle**AOZITA**$10.20**4.7★19,355 rev](https://www.amazon.com/dp/B088R6QXPC) [3**MaxMau 24PCS 10ml Glass Bottles Mini Vials with Cork Stoppers for DIY Decor**MaxMau**$7.81**4.8★3,719 rev](https://www.amazon.com/dp/B07MLYVMFC) [4**Accguan 4oz Small Glass Jars with lids (Silver) Mini Mason Jars Set of 40**Accguan**$28.48**4.7★2,901 rev](https://www.amazon.com/dp/B07QD3J2NG) [5**CycleMore 40 Pcs 4oz Crystal Mini Mason Jars Silver Separable Lids**CycleMore**$29.02**4.7★1,506 rev](https://www.amazon.com/dp/B0932Z3PLN)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**2oz Small Glass Jar with Lid 6 Pack Clear Cosmetic Jar with Wood-Grain Lid**Bumobum**$9.61**134 rev7mo ago](https://www.amazon.com/dp/B0G1STK6MZ) [**PureRoot 6 Pack 2 oz Mini Mason Jars Small Glass Jars with Lids**PureRoot**$9.68**88 rev7mo ago](https://www.amazon.com/dp/B0GD14KJ86) [**PureRoot 48 Pack 2 oz Mini Mason Jars Bulk Set Small Glass Jars with Lids**PureRoot**$30.90**88 rev7mo ago](https://www.amazon.com/dp/B0GD1FRBKY) [**4oz Small Glass Jar with Lid 4 Pack Clear Cosmetic Jar with Wood-Grain Lid**Bumobum**$9.50**134 rev9mo ago](https://www.amazon.com/dp/B0FPM9ZV3Y) [**GLATABAM 4 OZ Salad Dressing Jar 8 Pack Airtight Leakproof Bulk Small Glass Sauce Jar with Lids Reusable for Lunch Box Bento Travel & Meal Prep(4 OZ-8Pack)**GLATABAM**$14.68**612 rev11mo ago](https://www.amazon.com/dp/B0FQ4QBYGQ)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**PureRoot 48 Pack 2 oz Mini Mason Jars Bulk Set Small Glass Jars with Lids**PureRoot**$30.90**4.7★**▲ 187%**](https://www.amazon.com/dp/B0GD1FRBKY) [**PureRoot 6 Pack 2 oz Mini Mason Jars Small Glass Jars with Lids**PureRoot**$9.68**4.7★**▲ 177%**](https://www.amazon.com/dp/B0GD14KJ86) [**GLATABAM 4 OZ Salad Dressing Jar 8 Pack Airtight Leakproof Bulk Small Glass Sauce Jar with Lids Reusable for Lunch Box Bento Travel & Meal Prep(4 OZ-8Pack)**GLATABAM**$14.68**4.7★**▲ 129%**](https://www.amazon.com/dp/B0FQ4QBYGQ) [**RowinsyDD Baby Food Containers 4 oz 8 Pack Glass Jars with Lids**RowinsyDD**$15.04**4.7★**▲ 70%**](https://www.amazon.com/dp/B0CRRBD8YY) [**2oz Small Glass Jar with Lid 6 Pack Clear Cosmetic Jar with Wood-Grain Lid**Bumobum**$9.61**4.6★**▲ 47%**](https://www.amazon.com/dp/B0G1STK6MZ)
**~~View all trending →~~**
## **What buyers say about 4 oz glass jars with lids**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Size-Overall**20%
*“I love the size”*
**Quality-Overall**18%
*“Bottles are good quality”*
**Advertised Vs Actual Product**8%
*“Better than expected”*
**Value For Money**8%
*“Excellent Value”*
**Ease Of Use**5%
*“Easy to use”*
**Leak-Proof**5%
*“Doesnt leak”*
**Storage Capacity**4%
*“Easy to store”*
**Gifting Purpose**4%
*“Perfect for gift giving”*
**Durability**3%
*“The material is durable—I really liked them”*
**Ease Of Cleaning**3%
*“clean up quickly”*
### **What buyers complain about **
**Size-Overall**18%
*“too big”*
**Leak-Proof**12%
*“Not leakproof”*
**Durability**9%
*“Break easily”*
**Quality-Overall**6%
*“Cheap quality”*
**Ease Of Use**5%
*“They are hard to use”*
**Ease Of Cleaning**4%
*“Lids impossible to clean thoroughly”*
**Rusts/Corrodes**3%
*“Rusted”*
**Strength**3%
*“very fragile”*
**Value For Money**3%
*“over priced for what you get”*
**Thickness**3%
*“The glass of the bottle is thick”*
### **Top return reasons **
**Size-Overall**78%
**Advertised Vs Actual Product**4%
**Value For Money**4%
**Quality-Overall**2%
**Material Quality**2%
**Leak-Proof**1%
**Functionality-Overall**1%
**Defective Material/Parts**1%
**Ease Of Use**1%
**Weight Heavy**1%
## **Common questions**
- **Is 4 oz glass jars with lids profitable to sell on Amazon United States?**
- The niche generates $1.2M/yr across 93 tracked products. 19 of 24 products launched in the last 360 days are still selling. 90-day search growth is -7.0%. Flapen's verdict: Worth a look (64/100).
- **How competitive is the 4 oz glass jars with lids niche?**
- 58 brands and 79 sellers compete. The top 5 products take 23% of clicks and top 5 brands hold 29% of demand.
- **What do buyers complain about in 4 oz glass jars with lids?**
- Top complaints mined from reviews: Size-Overall, Leak-Proof, Durability. The return rate is 2.2%.
- **When does demand for 4 oz glass jars with lids peak?**
- Demand peaks in May–Dec; the busiest month runs 1.8× the quietest.
- **What does it cost to enter the 4 oz glass jars with lids niche?**
- Listings span $5.03–$36.20; the average listing price is $18.64 (sweet spot $15–$100). The average incumbent carries 1,627 reviews — the moat a new listing must climb.
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