tamari
Skip itBrand-locked demand (top 5 brands take 100% of clicks) — this niche doesn't clear our bar today.
Conversion
Incredible20.9%search→purchase rate — share of searches ending in a sale
Returns
Incredible0.0%return rate — above 5% kills the launch gate
Review moat
Good1,076.4avg incumbent reviews — the moat a new listing must climb
Market size
Okay£107K£107K/yr · 83K searches
Quality gap
Bad4.7★avg incumbent rating — lower means beatable quality
Growth
Bad-16.9%90-day search growth — must beat 0% to launch
Avg price
Bad£6.21avg listing price — sweet spot $15–$100
Competition
Bad86%top-5 click share — a locked-up shelf
Brand share
Bad100%top-5 brand share — brand-locked demand
Price range
Bad£2.75–£12.90cheapest to priciest tracked listing — scored on the share inside $15–$100
According to Flapen's Amazon United Kingdom niche tracking, tamari is a £107K/yr Amazon United Kingdom market (83K searches/yr). The top 5 brands hold 100% of demand. Demand peaks in Jan. Verdict: Skip it — 34/100.
Data updated Jul 24, 2026 · scored weekly · How we score niches
tamari market data
- Units sold / yr
- 15K–20K
- avg 1,250–1,500/product
- Revenue / yr
- £93K–£124K
- units × avg price
- Conversion rate
- 20.9%
- Avg BSR
- #25
- Page quality
- 0%
- Prime
- 90%
- Sponsored
- 60%
- Out of stock
- 0.0%
- Avg brand age
- 78 months
- Avg seller age
- 170 days
Competition & brand share
The top 5 products capture 86% of clicks — a locked-up shelf that new listings rarely crack.Brands
5 flat
Sellers
39
Top-5 brand share
100%
Top 20: 100%
Top-5 click share
86%
Top 20: 100%
Open market
0%
- Kikkoman66%
- Yutaka14%
- Emma Basic11%
- Clearspring6%
- Yamasa3%
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — -16.9% search growth over the last 90 days.Peak months: Jan · busiest ÷ quietest = 1.6×
Top tamari search terms
- gluten free soy sauce33K/yr
- tamari25K/yr
- low sodium soy sauce6K/yr
- tamari soy sauce7K/yr
- low salt soy sauce4K/yr
- tamari sauce4K/yr
- soy sauce gluten free2K/yr
- kikkoman gluten free soy sauce2K/yr
Top tamari 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 10 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Kikkoman Tamari Gluten Free Soy Sauce 1 L
Kikkoman£6.974.6★1,680 rev
Yutaka Organic Tamari Soy Sauce 150ml | Naturally Brewed Japanese Soy Sauce | Premium Gluten-Free & Vegan Seasoning | Rich Umami Flavor for Sushi Stir-Fries Marinades & Dressings
Yutaka£2.754.8★12 rev
Emma Basic Gluten Free Reduced Salt Soy Sauce 1 Litre | Umami |Reduced Salt |No Additives|
Emma Basic£5.354.6★1,162 rev
KIKKOMAN Tamari Gluten Free Soy Sauce 250 ml
Kikkoman£2.884.6★1,303 rev
Kikkoman Less Salt Soy Sauce 975 ml Naturally Brewed
Kikkoman£7.354.7★2,200 rev
Newest
by launch dateYutaka Organic Tamari Soy Sauce 150ml | Naturally Brewed Japanese Soy Sauce | Premium Gluten-Free & Vegan Seasoning | Rich Umami Flavor for Sushi Stir-Fries Marinades & Dressings
Yutaka£2.7512 rev
Kikkoman Tamari Gluten Free Soy Sauce 150ml
Kikkoman£5.64121 rev
Yamasa Low Sodium Soy Sauce 1L | Naturally Brewed | 45% Less Salt | Rich Umami Flavor | Ideal for Health-Conscious Cooking
Yamasa£5.5958 rev
Emma Basic Gluten Free Reduced Salt Soy Sauce 1 Litre | Umami |Reduced Salt |No Additives|
Emma Basic£5.351,162 rev
Clearspring Organic Single Strength Japanese Tamari SOYA Sauce 250ml
Clearspring£6.94112 rev
Trending
90-day click momentumYutaka Organic Tamari Soy Sauce 150ml | Naturally Brewed Japanese Soy Sauce | Premium Gluten-Free & Vegan Seasoning | Rich Umami Flavor for Sushi Stir-Fries Marinades & Dressings
Yutaka£2.754.8★
Yamasa Low Sodium Soy Sauce 1L | Naturally Brewed | 45% Less Salt | Rich Umami Flavor | Ideal for Health-Conscious Cooking
Yamasa£5.594.4★
Kikkoman Tamari Gluten Free Soy Sauce 1 L
Kikkoman£6.974.6★
Kikkoman Less Salt Soy Sauce 975 ml Naturally Brewed
Kikkoman£7.354.7★
Kikkoman Soy Sauce 1 Litre Naturally Brewed
Kikkoman£5.774.8★
What buyers say about tamari
What buyers praise and complain about, mined from review topics.What buyers love
“Good taste”
“Good value for money”
“the quality has been consistent”
“Great flavour”
“Gluten free”
“Not too salty”
“As expected”
“Gluten free as well”
“Best soy sauce you can get”
“no additives unlike most other brands”
What buyers complain about
“It is quite salty I think”
“This tub is massive”
“It completely drowns out the flavor of whatever Im cooking”
“Consistency: Very thin and watery”
“very acidic”
“Why isn't all soy sauce Gluten free”
“Very thin and watery”
“it just makes everything taste like a salt-lick”
Common questions
- Is tamari profitable to sell on Amazon United Kingdom?
- The niche generates £107K/yr across 10 tracked products. 90-day search growth is -16.9%. Flapen's verdict: Skip it (34/100).
- How competitive is the tamari niche?
- 5 brands and 39 sellers compete. The top 5 products take 86% of clicks and top 5 brands hold 100% of demand.
- What do buyers complain about in tamari?
- Top complaints mined from reviews: Salt Content, Size-Overall, Flavor. The return rate is 0.0%.
- When does demand for tamari peak?
- Demand peaks in Jan; the busiest month runs 1.6× the quietest.
- What does it cost to enter the tamari niche?
- Listings span £2.75–£12.90; the average listing price is £6.21 (sweet spot $15–$100). The average incumbent carries 1,076 reviews — the moat a new listing must climb.