kilner jars 0.5l
Skip itBrand-locked demand (top 5 brands take 100% of clicks) — this niche doesn't clear our bar today.
Conversion
Incredible17.6%search→purchase rate — share of searches ending in a sale
Returns
Incredible0.6%return rate — above 5% kills the launch gate
Review moat
Okay1,748.22avg incumbent reviews — the moat a new listing must climb
Price range
Okay£2.27–£25.47cheapest to priciest tracked listing — scored on the share inside $15–$100
Avg price
Okay£9.96avg listing price — sweet spot $15–$100
Competition
Okay66%top-5 click share — leaders hold, buyers still browse
Quality gap
Okay4.6★avg incumbent rating — lower means beatable quality
Growth
Bad-20.2%90-day search growth — must beat 0% to launch
Market size
Bad£46K£46K/yr · 26K searches
Brand share
Bad100%top-5 brand share — brand-locked demand
According to Flapen's Amazon United Kingdom niche tracking, kilner jars 0.5l is a £46K/yr Amazon United Kingdom market (26K searches/yr). The top 5 brands hold 100% of demand. Verdict: Skip it — 37/100.
Data updated Jul 27, 2026 · scored weekly · How we score niches
kilner jars 0.5l market data
- Units sold / yr
- 5K–6K
- avg 250–500/product
- Revenue / yr
- £50K–£60K
- units × avg price
- Conversion rate
- 17.6%
- Avg BSR
- #151
- Page quality
- 0%
- Prime
- 39%
- Sponsored
- 28%
- Out of stock
- 0.0%
- Avg brand age
- 44 months
- Avg seller age
- 190 days
Competition & brand share
The top 5 products take 66% of clicks — established leaders, but buyers still shop beyond them.Brands
5 flat
Sellers
52
Top-5 brand share
100%
Top 20: 100%
Top-5 click share
66%
Top 20: 100%
Open market
0%
- Kilner90%
- Argon Tableware4%
- Maison & White3%
- ComSaf2%
- ZENO1%
Demand
Weekly Amazon search volume, last 47 weeks — -20.2% search growth over the last 90 days.Top kilner jars 0.5l 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 18 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Kilner Preserve Jar 0.5L (500ml) Round Glass Screw Top Lid Preservation Storage Jar for Jams Chutneys Small Pickled Fruits
Kilner£2.274.6★3,565 rev
Kilner Set of 3 Round Clip Top Jars 0.5 Litre (3 x 500ml) Airtight Glass Storage Jars for Preserving Jams Dry Foods Reusable
Kilner£10.414.7★816 rev
Kilner Round Clip Top Jar 0.5 Litre (500ml) Airtight Glass Storage Jar for Preserving Jams Chutneys Dry Foods Reusable
Kilner£5.204.7★2,641 rev
Kilner Round Clip Top Jar 0.5 Litre (500ml) Airtight Glass Storage Jar for Preserving Jams Chutneys Dry Foods Reusable
Kilner£3.874.7★547 rev
6 x Kilner Square 0.5 Litre Airtight Clip Top Preserve Jars 0025.510
Kilner£22.004.8★790 rev
Newest
by launch date
ComSaf 3 Pack 500ml Short Glass Jars with Airtight Lids Small Clip Top Jars for Drawers & Pantry Mini Mason Jars for Jam Pickles Canning Snacks Spice Storage & Pantry Organization
ComSaf£11.23588 rev
Kilner Square Clip Top Jar 250ml (0.25L) Airtight Glass Jar for Storing Herbs Spices Dried Fruits Nuts and Seeds
Kilner£4.5477 rev
ZENO Clip Top Glass Jars 500ml 6PCS | Airtight Glass Storage | Perfect for Dry Food Coffee Beans & Tea Bags | Kitchen Preserving & Spice Containers
ZENO£12.22185 rev
Kilner Preserve Jar Set of 3 x 0.5L (500ml) Round Glass Screw Top Lid Preservation Storage Jar for Jams Chutneys and Small Pickled Fruits
Kilner£8.21336 rev
Kilner Set of 3 Round Clip Top Jars 0.5 Litre (3 x 500ml) Airtight Glass Storage Jars for Preserving Jams Dry Foods Reusable
Kilner£10.41816 rev
Trending
90-day click momentumComSaf 3 Pack 500ml Short Glass Jars with Airtight Lids Small Clip Top Jars for Drawers & Pantry Mini Mason Jars for Jam Pickles Canning Snacks Spice Storage & Pantry Organization
ComSaf£11.234.7★
Kilner Clip Top Jar 1 Litre (1000ml) Airtight Glass Storage Jar for Preserving Fruits Vegetables Coffee Tea Rice Flour Nuts Pasta
Kilner£3.454.7★
Kilner Round Clip Top Jar 0.5 Litre (500ml) Airtight Glass Storage Jar for Preserving Jams Chutneys Dry Foods Reusable
Kilner£3.874.7★
Kilner Square Clip Top Jar 250ml (0.25L) Airtight Glass Jar for Storing Herbs Spices Dried Fruits Nuts and Seeds
Kilner£4.544.4★
Kilner Round Clip Top Jar 0.5 Litre (500ml) Airtight Glass Storage Jar for Preserving Jams Chutneys Dry Foods Reusable
Kilner£5.204.7★
What buyers say about kilner jars 0.5l
What buyers praise and complain about, mined from review topics.What buyers love
“Good quality glass product”
“Good price”
“Good size for my needs”
“Exactly what I wanted”
“Perfect for storing almost anything you can think of in the kitchen”
“easy to use”
“durable”
“slim, versatile, good quality”
“Easy to clean”
“Nice size looks sturdy”
What buyers complain about
“Breaks Easily”
“Not great quality glass”
“Jars a slightly smaller than I thought”
“2 broken, washed the others and the wire fittings dried rusty, don't waste your money”
“the strong rubber smell doesnt go”
“making it completely impossible for a toddler to confidently open or close the jar without the whole thing falling apart”
“The only thing is that I find out the price is too high for what they are”
“The dimensions provided don't give enough information and are misleading”
“leaks if turned upside down”
“Very fragile, closing mechanism buckles. not robust”
Top return reasons
Common questions
- Is kilner jars 0.5l profitable to sell on Amazon United Kingdom?
- The niche generates £46K/yr across 18 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is -20.2%. Flapen's verdict: Skip it (37/100).
- How competitive is the kilner jars 0.5l niche?
- 5 brands and 52 sellers compete. The top 5 products take 66% of clicks and top 5 brands hold 100% of demand.
- What do buyers complain about in kilner jars 0.5l?
- Top complaints mined from reviews: Durability, Quality-Overall, Size-Overall. The return rate is 0.6%.
- What does it cost to enter the kilner jars 0.5l niche?
- Listings span £2.27–£25.47; the average listing price is £9.96 (sweet spot $15–$100). The average incumbent carries 1,748 reviews — the moat a new listing must climb.