---
title: "Fermentation Weights — £57K/yr Amazon UK Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/uk/home-garden/fermentation-weights"
last_updated: "2026-07-31T23:57:49.085Z"
locale: en
meta:
description: "Niche score 44/100 · £57K/yr market · 71K searches/yr · £9.83 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 44/100 · £57K/yr market · 71K searches/yr · £9.83 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Fermentation Weights — £57K/yr Amazon UK Niche (2026) - Flapen"
---
# **fermentation weights**
**Skip it**
Prices mostly outside the sweet spot ($4.66–$16.40) — this niche doesn't clear our bar today.
Market size 14Growth 14Conversion 79Competition 25Returns 93Price range 12Avg price 32Brand share 54Review moat 91Quality gap 68
**Returns**
**Great****1.1%**
return rate — above 5% kills the launch gate
**Review moat**
**Great****180.13**
avg incumbent reviews — the moat a new listing must climb
**Conversion**
**Great****8.1%**
search→purchase rate — share of searches ending in a sale
**Quality gap**
**Good****4.3★**
avg incumbent rating — lower means beatable quality
**Brand share**
**Good****73%**
top-5 brand share — brands hold most of the demand
**Avg price**
**Okay****£9.83**
avg listing price — sweet spot $15–$100
**Competition**
**Okay****70%**
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–£16.40**
cheapest 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 ~~](https://flapen.com/research/methodology)
## **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.
2K2KSpike '25Spike '26Sep '25Nov '25Dec '25Feb '26Mar '26May '26
[**Open Trend **](https://flapen.com/research/uk/home-garden/fermentation-weights/trend)
## **Top fermentation weights search terms**
- **fermentation weights**47K/yr-22.7%6.7% conv. - **fermenting weights**9K/yr-27.0%6.1% conv. - **glass weights for fermenting**6K/yr-22.4%8.6% conv. - **glass fermentation weights**5K/yr-10.0%8.7% conv. - **fermentation weight**4K/yr-24.1%5.9% conv. [**All search terms **](https://flapen.com/research/uk/home-garden/fermentation-weights/search-terms)
## **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.
0%10%£6K20%£11K30%£17K40%£23K1101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)1 product missing review or click data not plotted
All 15 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Glass Fermentation Weights for Fermentation with Easy Lift Handles Set of 4**Country Trading Co.**£11.30**4.6★1,076 rev](https://www.amazon.co.uk/dp/B07RK36W7H) [2**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**£9.80**4.7★27 rev](https://www.amazon.co.uk/dp/B0DPQLDW42) [3**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**£10.73**4.3★468 rev](https://www.amazon.co.uk/dp/B0CJVDXY7D) [4**wandeli 4 Pack/Set Fermentation Stone Glass Weights Pickle Kimchi for Wide Mouth Vessels**wandeli**£9.71**4.5★175 rev](https://www.amazon.co.uk/dp/B08T7BYLQ8) [5**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**£16.40**4.6★480 rev](https://www.amazon.co.uk/dp/B0BLTKGTPH)
**~~View all top sellers →~~**
### **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**£8.90**0 rev2mo ago](https://www.amazon.co.uk/dp/B0GJ673QKL) [**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**£8.66**6 rev4mo ago](https://www.amazon.co.uk/dp/B0GTVZTPG1) [**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**£4.66**6 rev7mo ago](https://www.amazon.co.uk/dp/B0G4LVD9TP) [**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**£8.40**5 rev8mo ago](https://www.amazon.co.uk/dp/B0G1MS39CC) [**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**£10.23**14 rev9mo ago](https://www.amazon.co.uk/dp/B0FXG5F688)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**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**£8.66**4.8★**▲ 364%**](https://www.amazon.co.uk/dp/B0GTVZTPG1) [**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**£8.90**0.0★**▲ 150%**](https://www.amazon.co.uk/dp/B0GJ673QKL) [**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**£4.66**2.3★**▲ 119%**](https://www.amazon.co.uk/dp/B0G4LVD9TP) [**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**£16.40**4.6★**▲ 70%**](https://www.amazon.co.uk/dp/B0BLTKGTPH) [**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**£9.80**4.7★**▲ 60%**](https://www.amazon.co.uk/dp/B0DPQLDW42)
**~~View all trending →~~**
## **What buyers say about fermentation weights**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**18%
*“Great for making sauerkraut”*
**Advertised Vs Actual Product**15%
*“Does the job”*
**Value For Money**14%
*“Excellent value”*
**Size-Overall**12%
*“These are the right size”*
**Weight Heavy**7%
*“Absolutely love these fermentation weights”*
**Ease Of Use**7%
*“easy to use”*
**Ease Of Cleaning**6%
*“even easier to clean”*
**Efficiency**3%
*“Does the job well”*
**Design-Overall**3%
*“They are aesthetically pleasing”*
**Grip**3%
*“Easy Grip Glass Fermentation Stone to Remove Excess Brine for Fermenting Sauerkraut Pickles Kimchi”*
### **What buyers complain about **
**Size-Overall**71%
*“The mesh is ways smaller”*
**Advertised Vs Actual Product**7%
*“the pictures are not showing that”*
**Value For Money**7%
*“they're a bit overpriced for a lump of glass”*
### **Top return reasons **
**Size-Overall**79%
**Advertised Vs Actual Product**4%
**Weight Heavy**3%
**Quality-Overall**3%
**Defective Material/Parts**2%
**Strength**2%
**Grip**2%
**Compatibility-Overall**1%
**Design-Overall**1%
**Ease Of Use**1%
## **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.
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