weck jars
Skip itBrand-locked demand (top 5 brands take 100% of clicks) — this niche doesn't clear our bar today.
Review moat
Incredible78.21avg incumbent reviews — the moat a new listing must climb
Returns
Great1.3%return rate — above 5% kills the launch gate
Avg price
Great£17.79avg listing price — sweet spot $15–$100
Price range
Good£8.27–£30.25cheapest to priciest tracked listing — scored on the share inside $15–$100
Conversion
Okay3.5%search→purchase rate — share of searches ending in a sale
Quality gap
Okay4.5★avg incumbent rating — lower means beatable quality
Competition
Okay69%top-5 click share — leaders hold, buyers still browse
Market size
Bad£69K£69K/yr · 113K searches
Growth
Bad-22.9%90-day search growth — must beat 0% to launch
Brand share
Bad100%top-5 brand share — brand-locked demand
According to Flapen's Amazon United Kingdom niche tracking, weck jars is a £69K/yr Amazon United Kingdom market (113K searches/yr). The top 5 brands hold 100% of demand. Demand peaks in Jan–Feb. Verdict: Skip it — 38/100.
Data updated Jul 27, 2026 · scored weekly · How we score niches
weck jars market data
- Units sold / yr
- 3K–4K
- avg 100–250/product
- Revenue / yr
- £53K–£71K
- units × avg price
- Conversion rate
- 3.5%
- Avg BSR
- #481
- Page quality
- 0%
- Prime
- 64%
- Sponsored
- 0%
- Out of stock
- 7.3%
- Avg brand age
- 30 months
- Avg seller age
- 179 days
Competition & brand share
The top 5 products take 69% of clicks — established leaders, but buyers still shop beyond them.Brands
5 rising
Sellers
7
Top-5 brand share
100%
Top 20: 100%
Top-5 click share
69%
Top 20: 100%
Open market
0%
- EcoBaker77%
- Weck10%
- Amazing child Montessori6%
- Generic4%
- Amazing Child Montessori4%
Demand & seasonality
Weekly Amazon search volume, last 72 weeks — -22.9% search growth over the last 90 days.Peak months: Jan, Feb · busiest ÷ quietest = 1.8×
Top weck jars search terms
- weck jars52K/yr
- weck jars with lids24K/yr
- weck jar15K/yr
- weck9K/yr
- ecobaker7K/yr
- weck sourdough starter jar4K/yr
- weck jars uk2K/yr
Top weck 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.
All 14 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
EcoBaker X2 WECK 742 580ml Wide Mouthed Storage Jars Including Glass Lids Seals & Clamps For Sourdough Preserving Canning Yoghurt Kimchi Jam.
EcoBaker£13.344.5★109 rev
X2 WECK 743 850ml Wide Mouthed Storage Jars Including Glass Lids Seals & Clamps For Sourdough Preserving Canning Yoghurt Kimchi Jam
EcoBaker£17.894.6★123 rev
WECK 743 X1 850ml Wide Mouthed Storage Jar Including Glass Lid Seal & Clamps For Sourdough Preserving Canning Yoghurt Kimchi
EcoBaker£11.014.5★116 rev
EcoBaker X2 WECK 744 580ml Tulip Storage Jars Including Glass Lids Seals & Clamps For Sourdough Preserving Canning Yoghurt Kimchi Jam
EcoBaker£14.274.7★70 rev
Amazing child Montessori SET OF SIX 850ml Large Weck Jars. German Made Classic Design. Model 743.
Weck£27.704.7★262 rev
Newest
by launch date
X4-370 ml Wide Mouthed Storage Glass Jar with rubber seal&clips- Airtight food storage
Generic£14.636 rev
EcoBaker X2 WECK 742 580ml Wide Mouthed Storage Jars Including Glass Lids Seals & Clamps For Sourdough Preserving Canning Yoghurt Kimchi Jam.
EcoBaker£13.34109 rev
X2 WECK 743 850ml Wide Mouthed Storage Jars Including Glass Lids Seals & Clamps For Sourdough Preserving Canning Yoghurt Kimchi Jam
EcoBaker£17.89123 rev
WECK 743 X1 850ml Wide Mouthed Storage Jar Including Glass Lid Seal & Clamps For Sourdough Preserving Canning Yoghurt Kimchi
EcoBaker£11.01116 rev
EcoBaker X2 WECK 744 580ml Tulip Storage Jars Including Glass Lids Seals & Clamps For Sourdough Preserving Canning Yoghurt Kimchi Jam
EcoBaker£14.2770 rev
Trending
90-day click momentumX4-370 ml Wide Mouthed Storage Glass Jar with rubber seal&clips- Airtight food storage
Generic£14.634.2★
EcoBaker WECK 745 1062ml Tulip Storage Jar Including Glass Lid Seal & Clamps For Sourdough Preserving Canning Yoghurt Kimchi Jam
EcoBaker£12.714.9★
SET OF SIX 1062ml Large Tulip Weck Jars. German Made Classic Design. Model 745.
Amazing child Montessori£30.254.6★
WECK 782 1000ml Wide Mouthed Storage Jar Including Glass Lid Seal & Clamps for Sourdough Preserving Canning Yoghurt Kimchi Jam
EcoBaker£12.504.6★
EcoBaker X2 WECK 744 580ml Tulip Storage Jars Including Glass Lids Seals & Clamps For Sourdough Preserving Canning Yoghurt Kimchi Jam
EcoBaker£14.274.7★
What buyers say about weck jars
What buyers praise and complain about, mined from review topics.What buyers love
“Good Quality”
“Absolutely perfect”
“Great price”
“These jars are excellent as storage jars”
“Easy to clean”
“I love the shape of these jars”
“Sturdy, great looking jars”
“Not very heavy either for being thick glass”
“Exactly what I was hoping it would be”
“In use straight away”
What buyers complain about
“Lower Quality Than Expected from Weck”
“leaving me with just one expensive jar”
“Too fragile for the delivery”
“Item arrived with parts missing so not going to be able to use both at same time for purpose I need”
Top return reasons
Common questions
- Is weck jars profitable to sell on Amazon United Kingdom?
- The niche generates £69K/yr across 14 tracked products. 90-day search growth is -22.9%. Flapen's verdict: Skip it (38/100).
- How competitive is the weck jars niche?
- 5 brands and 7 sellers compete. The top 5 products take 69% of clicks and top 5 brands hold 100% of demand.
- What do buyers complain about in weck jars?
- Top complaints mined from reviews: Quality-Overall, Value For Money, Strength. The return rate is 1.3%.
- When does demand for weck jars peak?
- Demand peaks in Jan–Feb; the busiest month runs 1.8× the quietest.
- What does it cost to enter the weck jars niche?
- Listings span £8.27–£30.25; the average listing price is £17.79 (sweet spot $15–$100). The average incumbent carries 78 reviews — the moat a new listing must climb.