ruler 15cm
Skip itPrices mostly outside the sweet spot ($1.51–$5.17) — this niche doesn't clear our bar today.
Returns
Incredible0.1%return rate — above 5% kills the launch gate
Conversion
Incredible12.4%search→purchase rate — share of searches ending in a sale
Review moat
Good502.2avg incumbent reviews — the moat a new listing must climb
Brand share
Good73%top-5 brand share — brands hold most of the demand
Growth
Okay+12.3%90-day search growth — must beat 0% to launch
Competition
Okay68%top-5 click share — leaders hold, buyers still browse
Quality gap
Okay4.6★avg incumbent rating — lower means beatable quality
Market size
Bad£48K£48K/yr · 136K searches
Avg price
Bad£2.87avg listing price — sweet spot $15–$100
Price range
Bad£1.51–£5.17cheapest to priciest tracked listing — scored on the share inside $15–$100
According to Flapen's Amazon United Kingdom niche tracking, ruler 15cm is a £48K/yr Amazon United Kingdom market (136K searches/yr). The top 5 brands hold 73% of demand. Demand peaks in Aug–Sep. Verdict: Skip it — 44/100.
Data updated Jul 29, 2026 · scored weekly · How we score niches
ruler 15cm market data
- Units sold / yr
- 25K–30K
- avg 1,000–1,250/product
- Revenue / yr
- £72K–£86K
- units × avg price
- Conversion rate
- 12.4%
- Avg BSR
- #101
- Page quality
- 0%
- Prime
- 93%
- Sponsored
- 73%
- Out of stock
- 0.3%
- Avg brand age
- 29 months
- Avg seller age
- 180 days
Competition & brand share
The top 5 products take 68% of clicks — established leaders, but buyers still shop beyond them.Brands
14 falling
Sellers
34
Top-5 brand share
73%
Top 20: 100%
Top-5 click share
68%
Top 20: 100%
Open market
21%
- Helix41%
- Redamancy11%
- Ainkou8%
- Uskerb7%
- Ashton and Wright6%
- MSC6%
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — +12.3% search growth over the last 90 days.Peak months: Aug, Sep · busiest ÷ quietest = 3.3×
Top ruler 15cm search terms
- ruler 15cm48K/yr
- 15cm ruler34K/yr
- small ruler17K/yr
- 15 cm ruler6K/yr
- helix ruler7K/yr
- 6 inch ruler7K/yr
- rulers 15cm4K/yr
- mini ruler5K/yr
- small rulers for school 15cm4K/yr
- oxford ruler3K/yr
Top ruler 15cm 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 15 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Helix 15cm / 6 Ruler - Clear
Helix£2.334.6★2,824 rev
Redamancy 6 Pcs 15cm Clear Plastic Rulers - 6 Inch Shatterproof Transparent Straight Ruler Measuring Ruler Tool
Redamancy£3.394.5★239 rev
Ainkou 3-Pack Clear Plastic Ruler - 15cm/6 Metric & Imperial Shatter Resistant Transparent Straight Measuring Ruler for Students & Offices
Ainkou£3.024.6★65 rev
Uskerb 6 Pcs 15cm Ruler Set | Clear Plastic Transparent 6 Inch Rulers for School Office Home Drawing Craft | Durable and Accurate Small Rulers
Uskerb£2.844.5★7 rev
Monster Stationery - 6 Inch / 15cm Transparent Coloured Rulers - Shatter Resistant - Pack of 5 - Mixed
Ashton and Wright£3.214.7★1,808 rev
Newest
by launch date
2 Pack 6 Inch Ruler Shatter-Resistant Small Ruler Durable 15cm Rulers Measuring Tool Suitable for Students School Office Use
Brilovent£3.383 rev
5-Piece 15cm Transparent Ruler Set - High Precision Metric & Imperial Scales for School Office & Crafting
Torveen£2.372 rev
runxsam 25 pcs 15 cm (6 in) colorful clear plastic rulers shatterproof
runxsam£5.1754 rev
10Pcs 15cm Thick Clear Plastic Rulers - 6 Inch Shatterproof Transparent Straight Ruler Measuring Ruler Tool (15CM-10Pcs)
Guagua£3.8722 rev
5-Piece 15cm Clear Plastic Ruler Set Perfect for School & Office Use Transparent Measuring Tools for Crafting Drawing and Precision Work Small Rulers for Kids & Adults
Eclovane£2.811 rev
Trending
90-day click momentumUskerb 6 Pcs 15cm Ruler Set | Clear Plastic Transparent 6 Inch Rulers for School Office Home Drawing Craft | Durable and Accurate Small Rulers
Uskerb£2.844.5★
5-Piece 15cm Clear Plastic Ruler Set Perfect for School & Office Use Transparent Measuring Tools for Crafting Drawing and Precision Work Small Rulers for Kids & Adults
Eclovane£2.815.0★
5-Piece 15cm Clear Plastic Ruler Set - Durable Precise for School Office & Craft Projects
Solvayne£2.534.7★
2 Pack 6 Inch Ruler Shatter-Resistant Small Ruler Durable 15cm Rulers Measuring Tool Suitable for Students School Office Use
Brilovent£3.384.7★
5-Piece 15cm Transparent Ruler Set - High Precision Metric & Imperial Scales for School Office & Crafting
Torveen£2.373.6★
What buyers say about ruler 15cm
What buyers praise and complain about, mined from review topics.What buyers love
“Great item just what was needed”
“Lovley size ruler for doing my crafts would recommend”
“does the job”
“Strong and durable”
“Handy”
“Great value for money”
“Small metal ruler”
“They do the job perfectly”
“Strong and durable”
“Clear to be able to see writing”
What buyers complain about
“Short metal ruler”
“Small rulers”
“Not what I expected from Helix - very flimsy”
“Not very good quality”
Top return reasons
Common questions
- Is ruler 15cm profitable to sell on Amazon United Kingdom?
- The niche generates £48K/yr across 15 tracked products. 0 of 2 products launched in the last 360 days are still selling. 90-day search growth is +12.3%. Flapen's verdict: Skip it (44/100).
- How competitive is the ruler 15cm niche?
- 14 brands and 34 sellers compete. The top 5 products take 68% of clicks and top 5 brands hold 73% of demand.
- What do buyers complain about in ruler 15cm?
- Top complaints mined from reviews: Metal Quality, Size-Overall, Strength. The return rate is 0.1%.
- When does demand for ruler 15cm peak?
- Demand peaks in Aug–Sep; the busiest month runs 3.3× the quietest.
- What does it cost to enter the ruler 15cm niche?
- Listings span £1.51–£5.17; the average listing price is £2.87 (sweet spot $15–$100). The average incumbent carries 502 reviews — the moat a new listing must climb.