small kilner jars
Skip itA small market ($39K/yr) — this niche doesn't clear our bar today.
Returns
Incredible0.7%return rate — above 5% kills the launch gate
Conversion
Great9.1%search→purchase rate — share of searches ending in a sale
Review moat
Okay1,794.79avg incumbent reviews — the moat a new listing must climb
Quality gap
Okay4.5★avg incumbent rating — lower means beatable quality
Competition
Okay67%top-5 click share — leaders hold, buyers still browse
Avg price
Okay£9.32avg listing price — sweet spot $15–$100
Price range
Okay£1.43–£19.52cheapest to priciest tracked listing — scored on the share inside $15–$100
Growth
Bad-21.2%90-day search growth — must beat 0% to launch
Market size
Bad£39K£39K/yr · 46K searches
Brand share
Bad96%top-5 brand share — brand-locked demand
According to Flapen's Amazon United Kingdom niche tracking, small kilner jars is a £39K/yr Amazon United Kingdom market (46K searches/yr). The top 5 brands hold 96% of demand. Verdict: Skip it — 36/100.
Data updated Jul 21, 2026 · scored weekly · How we score niches
small kilner jars market data
- Units sold / yr
- 5K–6K
- avg 100–250/product
- Revenue / yr
- £47K–£56K
- units × avg price
- Conversion rate
- 9.1%
- Avg BSR
- #442
- Page quality
- 0%
- Prime
- 63%
- Sponsored
- 37%
- Out of stock
- 0.0%
- Avg brand age
- 42 months
- Avg seller age
- 188 days
Competition & brand share
The top 5 products take 67% of clicks — established leaders, but buyers still shop beyond them.Brands
7 falling
Sellers
50
Top-5 brand share
96%
Top 20: 100%
Top-5 click share
67%
Top 20: 100%
Open market
2%
- Kilner79%
- OS Oak & Steel ENGLAND6%
- Argon Tableware6%
- Chef-hub3%
- Vogue2%
- HEFTMAN2%
- Open — no brand owns it (1 brand, 2%)
Demand
Weekly Amazon search volume, last 42 weeks — -21.2% search growth over the last 90 days.Top small kilner jars search terms
- small kilner jars15K/yr
- small kilner jars with clip lids11K/yr
- kilner jars 250ml9K/yr
- 250ml kilner jars4K/yr
- mini kilner jars3K/yr
- kilner jars small3K/yr
Top small kilner 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 19 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Kilner Square Clip Top Jar 250ml (0.25L) Airtight Glass Jar for Storing Herbs Spices Dried Fruits Nuts and Seeds
Kilner£4.574.4★76 rev
Kilner Round Clip Top Jar 0.125 Litre (125ml) Airtight Glass Storage Jar for Preserving Spices Dry Foods Reusable
Kilner£2.194.6★831 rev
Kilner Square Clip Top Spice Jar - 70ml
Kilner£1.434.5★967 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★814 rev
Oak & Steel - 12 Mini Clip Top Glass Spice Storage Jars - 100 ml Glass Canister Containers with Lids 24 Labels and Chalk Pen (8 x 5cm) - Perfect for Spice Storage Jam Honey Gifting
OS Oak & Steel ENGLAND£12.544.4★2,033 rev
Newest
by launch date
HEFTMAN Clip Top Glass Jars - Set of 6 250ml Airtight Glass Jars with Lids and Silicone Seal for Pasta Sourdough Starter Chutney Pickling Kitchen Organisation - Empty Food Storage Jar Set (6 Pack)
HEFTMAN£12.25158 rev
Kilner Square Clip Top Jar 250ml (0.25L) Airtight Glass Jar for Storing Herbs Spices Dried Fruits Nuts and Seeds
Kilner£4.5776 rev
Kilner Wide Mouth Preserve Jar 0.2L (200ml) Glass Storage Jar with Vacuum Seal Ideal for Preserving Small Fruits and Vegetables
Kilner£2.20154 rev
Kilner Preserve Jar - 250ml (Pack 6)
Kilner£13.10147 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£10.41814 rev
Trending
90-day click momentumHEFTMAN Clip Top Glass Jars - Set of 6 250ml Airtight Glass Jars with Lids and Silicone Seal for Pasta Sourdough Starter Chutney Pickling Kitchen Organisation - Empty Food Storage Jar Set (6 Pack)
HEFTMAN£12.254.7★
Argon Tableware Glass Jars with Airtight Metal Clip Lid - 500ml/17.6oz - 3 Pack - 4 Colour Seals - Medium Kitchen Storage Container Round Preserving Jar for Pickling Chutney Jam Coffee
Argon Tableware£8.924.5★
Kilner Square Clip Top Jar 250ml (0.25L) Airtight Glass Jar for Storing Herbs Spices Dried Fruits Nuts and Seeds
Kilner£4.574.4★
Kilner Snack and Store Pots Set of 2 Glass Jars with Leak-Proof Silicone Lids 0.125 Litre Each Perfect for Seeds Nuts Fruit Veggies and Snacks
Kilner£6.124.7★
Kilner Wide Mouth Preserve Jar 0.2L (200ml) Glass Storage Jar with Vacuum Seal Ideal for Preserving Small Fruits and Vegetables
Kilner£2.204.5★
What buyers say about small kilner jars
What buyers praise and complain about, mined from review topics.What buyers love
“Good quality jar”
“Good price”
“Good size for my needs”
“Does the job - good value for money”
“Good storage”
“Easy to clean”
“Useful”
“All durable”
“Nice size looks sturdy”
“Perfect for green”
What buyers complain about
“Dimensions insufficient and misleading”
“Not great quality glass”
“Broke after 2 uses”
“I was led to believe these were smell proof, they are not”
“The dimensions provided don't give enough information and are misleading”
“making it completely impossible for a toddler to confidently open or close the jar without the whole thing falling apart”
“Not worth the RRP”
“already 2 of them started chipping pretty badly when closing”
“leaks if turned upside down”
“Most crack when anything hot is put in them”
Top return reasons
Common questions
- Is small kilner jars profitable to sell on Amazon United Kingdom?
- The niche generates £39K/yr across 19 tracked products. 0 of 1 products launched in the last 360 days are still selling. 90-day search growth is -21.2%. Flapen's verdict: Skip it (36/100).
- How competitive is the small kilner jars niche?
- 7 brands and 50 sellers compete. The top 5 products take 67% of clicks and top 5 brands hold 96% of demand.
- What do buyers complain about in small kilner jars?
- Top complaints mined from reviews: Size-Overall, Quality-Overall, Durability. The return rate is 0.7%.
- What does it cost to enter the small kilner jars niche?
- Listings span £1.43–£19.52; the average listing price is £9.32 (sweet spot $15–$100). The average incumbent carries 1,795 reviews — the moat a new listing must climb.