Is 4 oz canning jars profitable to sell on Amazon United States?

The niche generates $131K/yr across 27 tracked products. 5 of 6 products launched in the last 360 days are still selling. 90-day search growth is +29.7%. Flapen's verdict: Worth a look (56/100).

How competitive is the 4 oz canning jars niche?

14 brands and 43 sellers compete. The top 5 products take 51% of clicks and top 5 brands hold 74% of demand.

What do buyers complain about in 4 oz canning jars?

Top complaints mined from reviews: Size-Overall, Rusts/Corrodes, Quality-Overall. The return rate is 1.6%.

When does demand for 4 oz canning jars peak?

Demand peaks in Sep–Nov–Dec; the busiest month runs 2.1× the quietest.

What does it cost to enter the 4 oz canning jars niche?

Listings span $8.70–$90.01; the average listing price is $27.28 (sweet spot $15–$100). The average incumbent carries 989 reviews — the moat a new listing must climb.

4 oz canning jars

Worth a look

Shows a sweet-spot price point ($27.28 avg), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.

Avg price

Incredible$27.28

avg listing price — sweet spot $15–$100

Price range

Great$8.70–$90.01

cheapest to priciest tracked listing — scored on the share inside $15–$100

Returns

Great1.6%

return rate — above 5% kills the launch gate

Conversion

Good6.3%

search→purchase rate — share of searches ending in a sale

Review moat

Good989.3

avg incumbent reviews — the moat a new listing must climb

Competition

Good51%

top-5 click share — leaders hold, buyers still browse

Growth

Good+29.7%

90-day search growth — must beat 0% to launch

Brand share

Good74%

top-5 brand share — brands hold most of the demand

Market size

Okay$131K

$131K/yr · 77K searches

Quality gap

Bad4.7★

avg incumbent rating — lower means beatable quality

According to Flapen's Amazon United States niche tracking, 4 oz canning jars is a $131K/yr Amazon United States market (77K searches/yr). The top 5 brands hold 74% of demand. Demand peaks in Sep–Nov–Dec. Verdict: Worth a look — 56/100.

Data updated Aug 5, 2026 · scored weekly · How we score niches

4 oz canning jars market data

Units sold / yr: 5K–6K; avg 100–250/product
Revenue / yr: $136K–$164K; units × avg price
Conversion rate: 6.3%
Avg BSR: #316
Page quality: 0%
Prime: 93%
Sponsored: 89%
Out of stock: 1.4%
Avg brand age: 42 months
Avg seller age: 161 days

Competition & brand share

The top 5 products take 51% of clicks — established leaders, but buyers still shop beyond them.

Brands

14 rising

Sellers

Top-5 brand share

74%

Top 20: 100%

Top-5 click share

51%

Top 20: 90%

Open market

20%

Ball35%
CycleMore13%
UrSpeedtekLive12%
Mcupper8%
ComSaf6%
VERONES6%

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — +29.7% search growth over the last 90 days.

Peak months: Sep, Nov, Dec · busiest ÷ quietest = 2.1×

Open Trend

Top 4 oz canning jars search terms

4 oz canning jars15K/yr +66.1%4.5% conv.
4 oz canning jars with lids9K/yr +27.1%5.7% conv.
4oz canning jars7K/yr +57.1%5.7% conv.
ball 4 oz mason jars with lids6K/yr +11.4%4.6% conv.
ball mason jars 4 oz8K/yr -18.1%3.2% conv.
4oz canning jars with lids7K/yr +22.1%6.2% conv.
4 oz ball jars6K/yr +28.2%4.0% conv.
ball canning jars 4 oz3K/yr +129.7%3.7% conv.
4 oz ball jars with lids3K/yr +133.2%3.5% conv.
4oz ball jars3K/yr +32.3%4.2% conv.

All search terms

Top 4 oz canning jars 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.

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

Ball Wide Mouth Quilted Crystal Jelly Jars with Lids and Bands Used for Canning Pickling Juice Jam Jelly Quarter Pint Size (4 Ounce (Pack of 6))

Ball$19.864.5★766 rev

UrSpeedtekLive 40 Pack 4 oz Mason Jars with Lids Small Canning Jars

UrSpeedtekLive$28.114.7★233 rev

CycleMore 4oz Mason Jar 40 Pack Clear Glass Jars with Silver Split Lids

CycleMore$28.654.7★1,506 rev

ComSaf Mini Mason Jars 4 oz 8 Pack Regular Mouth Glass Jars with Lids

ComSaf$11.934.7★4,848 rev

FORJARS Premium Mason Jars with Lids 4oz | Regular Mouth Canning Jars | 12-Pack Glass Jars for Jam Jelly Honey Spices Desserts Sauces Food Storage Freezer Safe Airtight Bulk Set

FORJARS$19.244.7★129 rev

Newest

by launch date

4 oz Small Embossed Mason Jars 24-Pack with Airtight Lids Leakproof

igoelove$22.35118 rev

9mo ago

STARSIDE 4oz Mini Glass Mason Jars 40-Pack with Airtight Silver Split Lids

STARSIDE$27.641,166 rev

10mo ago

FORJARS Premium Mason Jars with Lids 4oz | Regular Mouth Canning Jars | 12-Pack Glass Jars for Jam Jelly Honey Spices Desserts Sauces Food Storage Freezer Safe Airtight Bulk Set

FORJARS$19.24129 rev

11mo ago

Mcupper 4oz Glass Mason Jars with Airtight Lids Mini Canning Jars 40 Pack

Mcupper$27.76175 rev

11mo ago

Ball - 4 oz Regular Mouth Glass Mason Jars | 11 Pack Jars with Airtight Lids | Large Glass Jar for Food Storage with Lids | Ideal for Canning Fermentation Pickling Kombucha Brewing | Set of 11

Ball$27.5924 rev

1y ago

What buyers say about 4 oz canning jars

What buyers praise and complain about, mined from review topics.

What buyers love

Size-Overall24%

“Perfect size as a gift”

Quality-Overall16%

“Great product as expected”

Advertised Vs Actual Product12%

“Gets the job done”

Value For Money10%

“Great Value”

Gifting Purpose9%

“Perfect for homemade gifts”

Storage Capacity3%

“Perfect storage jars”

Durability3%

“Great when not broken”

Design-Overall3%

“Perfect classic design”

Strength2%

“Well made and sturdy”

Ease Of Use2%

“These little beauties are a real find for so many uses”

What buyers complain about

Size-Overall16%

“Small jars”

Rusts/Corrodes15%

“Rusted in dishwasher”

Quality-Overall7%

“Plastic lids have horrible quality control”

Advertised Vs Actual Product7%

“the picture shows no images on the lid”

Value For Money6%

“They are cheaper here”

Durability4%

“They literally break in tens of pieces”

Thickness3%

“They are quite thin and flimsy, and buckle with the heat”

Cooking Experience3%

“But do NOT hold up for canning”

Ease Of Use2%

“which makes screwing them on more of a struggle than it should be”

Product Condition2%

“This does not seem like a new product”

Top return reasons

Size-Overall79%

Value For Money8%

Advertised Vs Actual Product6%

Quality-Overall1%

Functionality-Overall1%

Rusts/Corrodes1%

Smell1%

Design-Overall1%

Jamming/Clogging0%

Leak-Proof0%

Common questions

Is 4 oz canning jars profitable to sell on Amazon United States?: The niche generates $131K/yr across 27 tracked products. 5 of 6 products launched in the last 360 days are still selling. 90-day search growth is +29.7%. Flapen's verdict: Worth a look (56/100).
How competitive is the 4 oz canning jars niche?: 14 brands and 43 sellers compete. The top 5 products take 51% of clicks and top 5 brands hold 74% of demand.
What do buyers complain about in 4 oz canning jars?: Top complaints mined from reviews: Size-Overall, Rusts/Corrodes, Quality-Overall. The return rate is 1.6%.
When does demand for 4 oz canning jars peak?: Demand peaks in Sep–Nov–Dec; the busiest month runs 2.1× the quietest.
What does it cost to enter the 4 oz canning jars niche?: Listings span $8.70–$90.01; the average listing price is $27.28 (sweet spot $15–$100). The average incumbent carries 989 reviews — the moat a new listing must climb.