fermentation weights
Skip itPrices mostly outside the sweet spot ($4.66–$16.40) — this niche doesn't clear our bar today.
Returns
Great1.1%return rate — above 5% kills the launch gate
Review moat
Great180.13avg incumbent reviews — the moat a new listing must climb
Conversion
Great8.1%search→purchase rate — share of searches ending in a sale
Quality gap
Good4.3★avg incumbent rating — lower means beatable quality
Brand share
Good73%top-5 brand share — brands hold most of the demand
Avg price
Okay£9.83avg listing price — sweet spot $15–$100
Competition
Okay70%top-5 click share — leaders hold, buyers still browse
Market size
Bad£57K£57K/yr · 71K searches
Growth
Bad-22.4%90-day search growth — must beat 0% to launch
Price range
Bad£4.66–£16.40cheapest to priciest tracked listing — scored on the share inside $15–$100
According to Flapen's Amazon United Kingdom niche tracking, fermentation weights is a £57K/yr Amazon United Kingdom market (71K searches/yr). The top 5 brands hold 73% of demand. Verdict: Skip it — 44/100.
Data updated Jul 27, 2026 · scored weekly · How we score niches
fermentation weights market data
- Units sold / yr
- 5K–6K
- avg 250–500/product
- Revenue / yr
- £49K–£59K
- units × avg price
- Conversion rate
- 8.1%
- Avg BSR
- #412
- Page quality
- 0%
- Prime
- 93%
- Sponsored
- 93%
- Out of stock
- 2.6%
- Avg brand age
- 29 months
- Avg seller age
- 208 days
Competition & brand share
The top 5 products take 70% of clicks — established leaders, but buyers still shop beyond them.Brands
14 flat
Sellers
19
Top-5 brand share
73%
Top 20: 100%
Top-5 click share
70%
Top 20: 100%
Open market
23%
- Country Trading Co.35%
- Three Oaks14%
- wandeli11%
- volila9%
- Okllen5%
- Mistillion4%
Demand
Weekly Amazon search volume, last 45 weeks — -22.4% search growth over the last 90 days.Top fermentation weights search terms
- fermentation weights47K/yr
- fermenting weights9K/yr
- glass weights for fermenting6K/yr
- glass fermentation weights5K/yr
- fermentation weight4K/yr
Top fermentation weights 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 15 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Glass Fermentation Weights for Fermentation with Easy Lift Handles Set of 4
Country Trading Co.£11.304.6★1,076 rev
4 Pack Glass Fermenting Weights 7cm for Wide Mouth Fermentation Jars - Glass Fermentation Stone with Easy-Grip Handle Remove Excess Brine for Pickles Sauerkraut
Three Oaks£9.804.7★27 rev
Fermentation Weights - 4 Pack Glass Fermenting Weights (7cm) for Wide Mouth Fermentation Jars - Glass Fermentation Weights with Easy-Grip Handle and a Functional Gap to Remove Excess Brine
volila£10.734.3★468 rev
wandeli 4 Pack/Set Fermentation Stone Glass Weights Pickle Kimchi for Wide Mouth Vessels
wandeli£9.714.5★175 rev
Okllen 9 Pack Fermentation Weights 7 cm Glass Fermenting Weights with Easy-Grip Handle for Wide-Mouth Jars Pickling Weight Set for Fermenting Pickles Sauerkraut and Other Fermented Foods
Okllen£16.404.6★480 rev
Newest
by launch date
3 Pcs Glass Fermenting Weights Set Fermentation Weights with Wooden Tamper Suitable for Large Mouth Canning Pickled Weights Used for Fermentation of Kimchi and Vegetables
xoqoiuo£8.900 rev
4 Pack Fermentation Weights 7cm Glass Fermenting Weights for Wide Mouth Fermentation Pickling Jars Easy Grip Glass Fermentation Stone to Remove Excess Brine for Fermenting Pickles Sauerkraut
ZORVENIX£8.666 rev
Mistillion 5 Pack Small Fermentation Weights 5.5cm Round Mesh Presser Plates Food Grade Plastic Fermenting Jar Accessories for Sauerkraut Kimchi Pickles Mini Jars
Mistillion£4.666 rev
2 Pack Glass Fermentation Weights with Easy Grip Handle - Food Safe Pickle Pebbles for Wide Mouth Mason Jars to Remove Excess Brine When Fermenting Pickles Kimchi & Sauerkraut
HJ-fuzhou£8.405 rev
TranRantic 4 Pack Fermentation Weights 7cm Glass Fermenting Weights for Wide Mouth Fermentation Jar Easy Grip Glass Fermentation Stone to Remove Excess Brine for Fermenting Sauerkraut Pickles Kimchi
TranRantic£10.2314 rev
Trending
90-day click momentum4 Pack Fermentation Weights 7cm Glass Fermenting Weights for Wide Mouth Fermentation Pickling Jars Easy Grip Glass Fermentation Stone to Remove Excess Brine for Fermenting Pickles Sauerkraut
ZORVENIX£8.664.8★
3 Pcs Glass Fermenting Weights Set Fermentation Weights with Wooden Tamper Suitable for Large Mouth Canning Pickled Weights Used for Fermentation of Kimchi and Vegetables
xoqoiuo£8.900.0★
Mistillion 5 Pack Small Fermentation Weights 5.5cm Round Mesh Presser Plates Food Grade Plastic Fermenting Jar Accessories for Sauerkraut Kimchi Pickles Mini Jars
Mistillion£4.662.3★
Okllen 9 Pack Fermentation Weights 7 cm Glass Fermenting Weights with Easy-Grip Handle for Wide-Mouth Jars Pickling Weight Set for Fermenting Pickles Sauerkraut and Other Fermented Foods
Okllen£16.404.6★
4 Pack Glass Fermenting Weights 7cm for Wide Mouth Fermentation Jars - Glass Fermentation Stone with Easy-Grip Handle Remove Excess Brine for Pickles Sauerkraut
Three Oaks£9.804.7★
What buyers say about fermentation weights
What buyers praise and complain about, mined from review topics.What buyers love
“Great for making sauerkraut”
“Does the job”
“Excellent value”
“These are the right size”
“Absolutely love these fermentation weights”
“easy to use”
“even easier to clean”
“Does the job well”
“They are aesthetically pleasing”
“Easy Grip Glass Fermentation Stone to Remove Excess Brine for Fermenting Sauerkraut Pickles Kimchi”
What buyers complain about
“The mesh is ways smaller”
“the pictures are not showing that”
“they're a bit overpriced for a lump of glass”
Top return reasons
Common questions
- Is fermentation weights profitable to sell on Amazon United Kingdom?
- The niche generates £57K/yr across 15 tracked products. 0 of 5 products launched in the last 360 days are still selling. 90-day search growth is -22.4%. Flapen's verdict: Skip it (44/100).
- How competitive is the fermentation weights niche?
- 14 brands and 19 sellers compete. The top 5 products take 70% of clicks and top 5 brands hold 73% of demand.
- What do buyers complain about in fermentation weights?
- Top complaints mined from reviews: Size-Overall, Advertised Vs Actual Product, Value For Money. The return rate is 1.1%.
- What does it cost to enter the fermentation weights niche?
- Listings span £4.66–£16.40; the average listing price is £9.83 (sweet spot $15–$100). The average incumbent carries 180 reviews — the moat a new listing must climb.