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Weck Jars

brand-locked demand (top 5 brands take 100% of clicks) — Weck Jars doesn't clear our bar today.

Flapen Score

38
Skip it
Market size 17Growth 14Conversion 43Competition 27Returns 90Price range 69Avg price 82Brand share 0Review moat 96Quality gap 33
This niche Category average

Is Weck Jars profitable on Amazon?

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.

Weck Jars: the Amazon niche in one read

Everything a seller checks before entering, in three answers.

Is the demand real?

Not really. Search demand moved -22.9% over the last 90 days and 3.5% of searches end in a purchase.

£69K

revenue / yr

Units sold / yr4K
Search volume / yr-22.9%113K
Conversion rate3.5%
Avg price£17.79

Who owns the niche?

The top 5 brands hold 100% of demand, so 0% of the market is open.

0%

open market share

Brands · sellers5 · 7
Top-5 product click share69%
Open market0%
Avg brand age30 months

Is there a way in?

Listing quality. The average product page scores 0/100 on content standards. Incumbents average 4.5★ — the gap to enter on.

0/100

page quality · 14 products

Sponsored placement0%
New entrants (1y)0· 0 succeeded
Avg rating4.5★
Avg reviews78

Top Weck Jars products & what they sell for

Every tracked product — its share of the shelf, its review moat, and what it sells for.

Competition: brands, sellers & click share

The top 5 products take 69% of clicks — established leaders, but buyers still shop beyond them.

£0£7K£14K£21K£28K1101001K Review Count Sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

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%

Weck Jars demand & seasonality

Weekly search volume, with the niche's key stats alongside.

Volume113KCVR3.5%Products14Brands5Top 5 Brands100%OOS Rate7.3%Rating4.5★Reviews78Avg BSR#481
3K2KSpike '25Prime Day '25Spike '26MarAprMayJunJulAugSepOctNovDecJanFebMarAprMayJun

Peak months: Jan, Feb · busiest ÷ quietest = 1.8×

Top Weck Jars search terms shoppers use

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

  • weck jars52K/yr
  • weck jars with lids24K/yr
  • weck jar15K/yr
  • weck9K/yr
  • ecobaker7K/yr
  • weck sourdough starter jar4K/yr
  • weck jars uk2K/yr

What reviews say buyers love and hate about Weck Jars

What buyers mention most, as a share of all reviews.

What buyers love

98% of reviews
Quality-Overall39%

Good Quality

Size-Overall18%

Absolutely perfect

Value For Money10%

Great price

Storage Capacity10%

These jars are excellent as storage jars

Ease Of Cleaning8%

Easy to clean

What buyers complain about

92% of reviews
Quality-Overall33%

Lower Quality Than Expected from Weck

Value For Money25%

leaving me with just one expensive jar

Strength17%

Too fragile for the delivery

Defective Material/Parts17%

Item arrived with parts missing so not going to be able to use both at same time for purpose I need

Weck Jars return rate & reasons

Why buyers send it back, as a share of all return requests.

1.3%

Return rate

74%

Fixable by listing

The "fixable" share counts expectation-mismatch reasons — size, look, advertised-vs-actual — that better copy and images address.

1Size-Overall
60%
2Compatibility-Overall
4%
3Add-Ons/Attachments
4%
4Durability
4%
5Shape/Style
4%

Common Weck Jars questions

The questions sellers ask about this niche, answered from the tracked metrics.

Flapen scores Weck Jars 38/100 on Amazon United Kingdom — Skip it. The niche generates £69K/yr across 14 tracked products. Search demand moved -22.9% over the last 90 days.
Search demand for Weck Jars on Amazon United Kingdom peaks in Jan–Feb, where the busiest month runs 1.8× the quietest.