fermentation weight
Launch itA $943K/yr market growing +25.4% this quarter with returns at 1.5% — clears our launch bar.
Conversion
Great10.4%search→purchase rate — share of searches ending in a sale
Returns
Great1.5%return rate — above 5% kills the launch gate
Avg price
Great$16.68avg listing price — sweet spot $15–$100
Market size
Great$943K$943K/yr · 542K searches
Price range
Good$9.92–$29.38cheapest to priciest tracked listing — scored on the share inside $15–$100
Review moat
Good1,189avg incumbent reviews — the moat a new listing must climb
Brand share
Good72%top-5 brand share — brands hold most of the demand
Growth
Good+25.4%90-day search growth — must beat 0% to launch
Competition
Bad72%top-5 click share — a locked-up shelf
Quality gap
Bad4.7★avg incumbent rating — lower means beatable quality
According to Flapen's Amazon United States niche tracking, fermentation weight is a $943K/yr Amazon United States market (542K searches/yr). The top 5 brands hold 72% of demand. Demand peaks in Aug. Verdict: Launch it — 59/100.
Data updated Aug 5, 2026 · scored weekly · How we score niches
fermentation weight market data
- Units sold / yr
- 50K–60K
- avg 3,000–4,000/product
- Revenue / yr
- $834K–$1.0M
- units × avg price
- Conversion rate
- 10.4%
- Avg BSR
- #61
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 85%
- Out of stock
- 0.0%
- Avg brand age
- 35 months
- Avg seller age
- 174 days
Competition & brand share
The top 5 products capture 72% of clicks — a locked-up shelf that new listings rarely crack.Brands
13 rising
Sellers
22
Top-5 brand share
72%
Top 20: 100%
Top-5 click share
72%
Top 20: 100%
Open market
23%
- SOLIGT38%
- Masontops11%
- eleganttime11%
- Mfacoy7%
- Elementi5%
- Okllen5%
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — +25.4% search growth over the last 90 days.Peak months: Aug · busiest ÷ quietest = 1.8×
Top fermentation weight search terms
- fermentation weight238K/yr
- fermenting weights68K/yr
- fermentation weights49K/yr
- glass weights for fermenting36K/yr
- glass fermentation weights28K/yr
- fermentation weights wide mouth15K/yr
- fermenting weights for mason jars7K/yr
- glass fermentation weights for mason jars4K/yr
- canning weights for fermenting13K/yr
- canning weights10K/yr
Top fermentation weight 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 13 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
4-Pack of Fermentation Glass Weights with Easy Grip Handle for Wide Mouth Mason Jars
SOLIGT$14.954.6★6,292 rev
Masontops Pickle Pebble Glass Fermenting Weights - Pickling Fermentation Weight Set - Small Mouth Size For Mason Jar Fermentation Kit
Masontops$21.484.7★3,970 rev
Eleganttime 4 Pack Easy Grip Handle Glass Fermentation Weights Great Mason Jar Wide Mouth Canning Fermenting Pickling Sourkrout Kraut Weight Fermentation Kit
eleganttime$13.134.7★884 rev
MFacoy 4-Pack of Fermentation Glass Weights with Easy Grip Handle for Great Wide Mouth Canning Mason Jars Pickling Sourkrout Kraut Glass Weight Fermentation Kit with Easy Grip Handle Dishwasher Safe
Mfacoy$12.054.7★424 rev
Elementi Fermentation Weight Set of 2 - Easy to Use Glass Fermenting Weights Perfect Fit for Wide Mouth Mason Jars Highly Durable Soda-Lime Glass Fermentation Kit for Sauerkraut Kimchi & More
Elementi$10.034.6★1,104 rev
Newest
by launch date
Hersolm 4 Pack Fermentation Kit for Wide Mouth Mason Jar (No Jars)
Hersolm$29.3872 rev
Fermenting weights wide mouth Mason Jar Fermentation Kit with 4 Fermentation Lids 4 Glass fermentation Weights 4 Airlocks for Fermenting 5 Silicone Rings & Grommets - Pickling kitNo Jars
ANZHIRUOSU$15.7442 rev
Xileanalee Fermentation Weight Glass 4 Pack for Wide Mouth Mason Jar-Easy Grip Handle Fermenting Weights for Pickling -7Oz 2.75inch Canning Weights for Fermenting
Xileanalee$12.25173 rev
Glass Fermentation Weights - 2 Pack 7.1oz/202g Heavy Clear Glass with Easy Grip - Smooth & Non-Porous Pickle Weights for Wide Mouth Mason Jars
LELELUK$9.92152 rev
MFacoy 4-Pack of Fermentation Glass Weights with Easy Grip Handle for Great Wide Mouth Canning Mason Jars Pickling Sourkrout Kraut Glass Weight Fermentation Kit with Easy Grip Handle Dishwasher Safe
Mfacoy$12.05424 rev
Trending
90-day click momentumHersolm 4 Pack Fermentation Kit for Wide Mouth Mason Jar (No Jars)
Hersolm$29.384.4★
Fermenting weights wide mouth Mason Jar Fermentation Kit with 4 Fermentation Lids 4 Glass fermentation Weights 4 Airlocks for Fermenting 5 Silicone Rings & Grommets - Pickling kitNo Jars
ANZHIRUOSU$15.744.5★
Cedilis 9 Pack Glass Fermentation Weights with Easy Grip Handles Heavy Glass Fermenting Lids Kit for Wide Mouth Mason Jar Fermenting Sauerkraut Kimchi Pickles Dishwasher Safe
Cedilis$20.184.8★
Xileanalee Fermentation Weight Glass 4 Pack for Wide Mouth Mason Jar-Easy Grip Handle Fermenting Weights for Pickling -7Oz 2.75inch Canning Weights for Fermenting
Xileanalee$12.254.6★
Masontops Pickle Pebble Glass Fermenting Weights - Pickling Fermentation Weight Set - Small Mouth Size For Mason Jar Fermentation Kit
Masontops$21.484.7★
What buyers say about fermentation weight
What buyers praise and complain about, mined from review topics.What buyers love
“Good quality”
“As advertised,”
“Easy to use”
“Perfect fit”
“Worth buying”
“cleans easily”
“They are heavy enough for my ferments”
“They do the job well”
“weighted fine”
“Easy grip design: The handle makes them simple to place in”
What buyers complain about
“Way to small”
“No grip”
“Since I didnt get to use them”
“There are no instructions”
“Bad design”
“Very costly for what they are”
“This didn't work for me”
“They are deceivingly heavy”
“very poor design IMO”
“letting bubbles of gas escape whenever the pressure is high enough to force them out”
Top return reasons
Common questions
- Is fermentation weight profitable to sell on Amazon United States?
- The niche generates $943K/yr across 13 tracked products. 3 of 3 products launched in the last 360 days are still selling. 90-day search growth is +25.4%. Flapen's verdict: Launch it (59/100).
- How competitive is the fermentation weight niche?
- 13 brands and 22 sellers compete. The top 5 products take 72% of clicks and top 5 brands hold 72% of demand.
- What do buyers complain about in fermentation weight?
- Top complaints mined from reviews: Size-Overall, Grip, Ease Of Use. The return rate is 1.5%.
- When does demand for fermentation weight peak?
- Demand peaks in Aug; the busiest month runs 1.8× the quietest.
- What does it cost to enter the fermentation weight niche?
- Listings span $9.92–$29.38; the average listing price is $16.68 (sweet spot $15–$100). The average incumbent carries 1,189 reviews — the moat a new listing must climb.