mason jars 12 oz
Worth a lookShows a sweet-spot price point ($22.18 avg), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Avg price
Great$22.18avg listing price — sweet spot $15–$100
Brand share
Great50%top-5 brand share — no brand owns this niche
Returns
Great1.8%return rate — above 5% kills the launch gate
Competition
Great39%top-5 click share — an open shelf
Price range
Good$8.98–$29.36cheapest to priciest tracked listing — scored on the share inside $15–$100
Conversion
Good5.1%search→purchase rate — share of searches ending in a sale
Market size
Good$277K$277K/yr · 246K searches
Review moat
Okay2,505.43avg incumbent reviews — the moat a new listing must climb
Growth
Okay+8.7%90-day search growth — must beat 0% to launch
Quality gap
Okay4.6★avg incumbent rating — lower means beatable quality
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
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.Peak months: Aug, Sep · busiest ÷ quietest = 1.7×
Top mason jars 12 oz search terms
- 12 oz mason jars35K/yr
- mason jars 12 oz32K/yr
- 12 oz mason jars with lids26K/yr
- 12 oz jars with lids20K/yr
- 12oz mason jars13K/yr
- 12oz mason jars with lids13K/yr
- 12 oz jars12K/yr
- mason jar 12 oz10K/yr
- 12 oz canning jars9K/yr
- 12 oz mason jar8K/yr
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.
All 24 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
ComSaf 12 oz Mason Jars 6 Pack Regular Mouth Glass Jars with Lids
ComSaf$16.394.7★4,848 rev
12 oz Mason Jars with Lids 20 Pack Clear Canning Jars for Food Storage
SZUAH$25.024.7★1,185 rev
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$16.474.4★168 rev
Rainforce Mason Jars 12 oz 20 Pack Glass Jars with Silver Lids food Storage
Rainforce$27.164.6★1,760 rev
CycleMore 20 Pcs 12oz Glass Mason Jars With Silver Separable Lids
CycleMore$26.954.6★1,613 rev
Newest
by launch date12 oz Mason Jars with Lids 20 Pack Clear Canning Jars for Food Storage
SZUAH$25.021,185 rev
STARSIDE 12oz Glass Embossed Mason Jars 20-Pack with Airtight Split Lids
STARSIDE$27.16199 rev
Danmu 12 oz Overnight Oats Containers with Lids Glass Jars with Lids 4 Pack
Danmu$16.16119 rev
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$16.47168 rev
12 oz Regular Mouth Mason Jar with Airtight Lid 20 Pack Glass Canning Jars
Keketin$23.55155 rev
Trending
90-day click momentumDanmu 12 oz Overnight Oats Containers with Lids Glass Jars with Lids 4 Pack
Danmu$16.164.6★
STARSIDE 12oz Glass Embossed Mason Jars 20-Pack with Airtight Split Lids
STARSIDE$27.164.7★
12 oz Mason Jars with Lids 20 Pack Clear Canning Jars for Food Storage
SZUAH$25.024.7★
12 oz Regular Mouth Mason Jar with Airtight Lid 15 Pack Glass Canning Jars
Keketin$21.704.6★
12 oz Mason Jars with Airtight Lids and Bands 20 Pack Glass Canning Jars
Keketin$24.044.6★
What buyers say about mason jars 12 oz
What buyers praise and complain about, mined from review topics.What buyers love
“Nice quality and keeps things fresh”
“Love the size”
“As advertised”
“Great deal”
“hold up nice”
“Sturdy, cute, and easy to clean”
“Does not leak”
“Cute colors”
“Awesome space saver”
“are easily washable”
What buyers complain about
“These are small jars”
“Rusty”
“Break easily”
“Bad quality”
“Very hard to open”
“They are cheaper here”
“they leak everywhere”
“Hard to clean”
“Nice jars for the money not as thick as Ball Jars”
“Does not meet product discription”
Top return reasons
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.