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Fermentation Jars

Maybe

Returns run at only 0.4% of orders. But demand is soft, at -20.6% this quarter, so Fermentation Jars is a Maybe.

Flapen Score
58
58 / 100
Top 23% of 5,777 Home & Garden niches · +7 vs the category median of 51
Market size
£152K/yr200K searches / yr
90-day growth
-20.6%search demand this quarter
Competition
39%top-5 click share · 24 brands · 68 sellers

Flapen Score

Fermentation Jars against its category

The dotted line is the Home & Garden average. Past it, Fermentation Jars is stronger. Inside it, weaker.

58Maybe
Big MarketTrendingHigh ConversionOpen MarketLow ReturnsPrice rangeAvg priceNo Dominant BrandLow Review BarrierQuality Gap
This niche Category average

Market

The Fermentation Jars market on Amazon at a glance

Shoppers on Amazon United Kingdom searched for Fermentation Jars 200K times last year and spent an estimated £152K. The top 5 brands take 70% of clicks. Demand peaks in Jan–Dec. Flapen scores it 58 out of 100, a Maybe.

01 · Demand

4.3% of searches ended in a purchase last week.

Shoppers searched for this 200K times in the last 12 months. That counts every search on Amazon United Kingdom for this niche's terms. In the latest week, 4.3% of those searches ended in a purchase. Searches in the last 90 days moved -20.6% against the 90 days before. Searches, conversion and average price together put the market at an estimated £152K a year.

Searches, last 12 months
200K
Growth, 90 days vs prior 90
-20.6%
Conversion, latest week
4.3%
Market size, estimated
£152Ka year
Peak month
December1.9× the quietest month
Top search term
fermentation jars88K searches a year

02 · Price

A sale here is worth £17.55.

Listings sell for £17.55 on average, from £3.45 to £38.07. Amazon reports units sold in ranges. This niche sold 6K to 8K a year. The average listing sells 100 to 250 of them. At £17.55 that is £2K to £4K a year per listing.

Average price
£17.55inside the $15 to $100 sweet spot
Price range
£3.45–£38.07
Amazon United Kingdom median price
£12.12across 27,606 niches
Units sold a year
6K–8K
Units per listing a year
100–250
Revenue per listing a year
£2K–£4K
Returns
0.4%of orders · Amazon United Kingdom median 0.6%

03 · Entry bar

The bar here is low.

82% of listings pay for placement with sponsored ads. 76% ship with Prime. On an average day, 9.9% of listings are out of stock. The average listing ranks #187 within Preserving. It carries 751 reviews at 4.30 stars, so a new listing needs social proof before a better product.

Sponsored listings
82%
Prime listings
76%
Out of stock, average day
9.9%
Average rank
#187in Preserving
Average rating
4.30 starsAmazon United Kingdom average 4.36 stars
Average reviews
751per listing
Listings tracked
45

04 · Newcomers

Amazon counts 2 of last year's 14 launches as successful.

14 products launched here in the last 12 months. Amazon counts 2 of them as successful launches, new products that hit its first-year sales bar. The brands on the shelf have sold for 36 months on average, so the names here are settling in.

Launched, last 12 months
14
Successful launches
2Amazon's first-year sales bar
Average brand age
36 months

Products

Top Fermentation Jars products & what they sell for

Every tracked product: its share of the shelf, its reviews, and its price.

Competition

Competition: brands, sellers & click share

The top 5 products take only 39% of clicks. An open shelf where new products get seen.

£0£5K£9K£14K£18K1101001K10K Review Count Sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

Brands

24 rising

Sellers

68

Top-5 brand share

70%

Top 20: 98%

Top-5 click share

39%

Top 20: 82%

Open market

25%

  • HEFTMAN19%
  • volila17%
  • Kilner17%
  • SwiftSlot11%
  • YUEYEE6%
  • lakeland5%

Demand

Fermentation Jars search demand

Weekly searches over the year, seasonality beneath. Pick a range.

6K4KSpike '24Holiday '24Spike '25Holiday '25SepDecMarJunAugNovMarMay

Peak months: Jan, Dec · busiest ÷ quietest = 1.9×

Search terms

Top Fermentation Jars search terms shoppers use

The exact words shoppers type, with yearly volume, growth, and conversion.

  • fermentation jars88K/yr
  • fermenting jar20K/yr
  • fermentation jar16K/yr
  • kimchi jar14K/yr
  • fermentation kit13K/yr
  • fermenting jars10K/yr
  • sauerkraut fermentation jar9K/yr
  • fermentation jars with weights6K/yr
  • fermenting jars with weights6K/yr
  • kilner fermentation jar5K/yr

Reviews and returns

What reviews say buyers love and hate about Fermentation Jars

What buyers praise, what they complain about and why they send it back, from the reviews.

Complain

Size-Overall15%+0.74

Wish jar was larger

Larger than I thought

it's a very small jar

Durability10%−0.16

Breaks Easily

broke on first use

Not durable

Quality-Overall9%+0.30

its not reliable at all

Buy cheap, buy twice

Poor Quality

Thickness5%−0.03

is a slightly thicker glass

extremely thin glass

the plastic is not super thick

Strength4%−0.05

Flimsy inner seal

thin glass

Fragile

Love

Quality-Overall27%+0.30

Quality jar

Good quality glass product

Excellent Product

Size-Overall10%+0.74

Good quality nice size

Lids fit and seal perfectly

Theyre also a great size for experimenting with small batches or flavour variations

Value For Money9%+0.92

Good value

reasonable price

Great value

Advertised Vs Actual Product7%+1.02

Does the job

As described

Exactly what I needed

Storage Capacity7%+0.66

Large capacity

great storage capacity

The best storage

Return

0.4% Return rate 81% Fixable by listing

Size-Overall70%▆▇▇██▇

Wish jar was larger

Larger than I thought

it's a very small jar

Defective Material/Parts7%█▃▃▂▂▄
Shape/Style3%█▇▇▇▅▁
Value For Money3%▅██▇▁▅

Disappointing for the price

Price could be lower

Sadly a complete waste of money

Quality-Overall2%▅▂▅▁█▅

its not reliable at all

Buy cheap, buy twice

Poor Quality

FAQ

Common Fermentation Jars questions

Answered from the same tracked data.