seaweed
Skip itPrices mostly outside the sweet spot ($1.55–$14.86) — this niche doesn't clear our bar today.
Returns
Incredible0.0%return rate — above 5% kills the launch gate
Conversion
Great8.7%search→purchase rate — share of searches ending in a sale
Review moat
Good1,019avg incumbent reviews — the moat a new listing must climb
Quality gap
Good4.4★avg incumbent rating — lower means beatable quality
Market size
Good£285K£285K/yr · 399K searches
Competition
Okay62%top-5 click share — leaders hold, buyers still browse
Avg price
Bad£8.16avg listing price — sweet spot $15–$100
Growth
Bad-11.2%90-day search growth — must beat 0% to launch
Brand share
Bad96%top-5 brand share — brand-locked demand
Price range
Bad£1.55–£14.86cheapest to priciest tracked listing — scored on the share inside $15–$100
According to Flapen's Amazon United Kingdom niche tracking, seaweed is a £285K/yr Amazon United Kingdom market (399K searches/yr). The top 5 brands hold 96% of demand. Verdict: Skip it — 45/100.
Data updated Jul 24, 2026 · scored weekly · How we score niches
seaweed market data
- Units sold / yr
- 30K–40K
- avg 1,000–1,250/product
- Revenue / yr
- £245K–£326K
- units × avg price
- Conversion rate
- 8.7%
- Avg BSR
- #78
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 43%
- Out of stock
- 1.7%
- Avg brand age
- 54 months
- Avg seller age
- 166 days
Competition & brand share
The top 5 products take 62% of clicks — established leaders, but buyers still shop beyond them.Brands
8 falling
Sellers
47
Top-5 brand share
96%
Top 20: 100%
Top-5 click share
62%
Top 20: 99%
Open market
2%
- Itsu48%
- CHOI'S 135%
- Emma Basic9%
- Kaitatuya2%
- Yutaka2%
- Abakus1%
- Open — no brand owns it (2 brands, 2%)
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — -11.2% search growth over the last 90 days.No pronounced peak months · busiest ÷ quietest = 1.4×
Top seaweed search terms
- seaweed187K/yr
- seaweed snacks108K/yr
- itsu seaweed thins35K/yr
- seaweed snack14K/yr
- sea weed12K/yr
- seaweed thins10K/yr
- crispy seaweed11K/yr
- itsu seaweed7K/yr
- korean seaweed5K/yr
- crispy seaweed snacks3K/yr
Top seaweed 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 21 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
itsu Seaweed Thins 5g | Crispy Seaweed Snacks | Vegan | Low Calorie | Healthy Snack | Sweet Soy & Salt | Pack of 20
Itsu£10.364.4★773 rev
CHOIS 1 Organic DAECHUN Seaweed Snacks 20 Pack Original Product of Korea Premium Great
CHOI'S 1£9.314.5★2,319 rev
itsu Seaweed Thins 5g | Crispy Seaweed Snacks | Vegan | Low Calorie | Healthy Snack | Sea Salt | Pack of 20
Itsu£10.834.4★3,897 rev
Daechun(Chois1) Seaweed Snack (Pack of 20) Original Sea Salt Green Tea Powder Product of Korea
CHOI'S 1£8.384.5★4,644 rev
Emma Basic Seaweed Sushi Nori | 40 Full Roasted Seaweed Sheets | Young Harvest | Crispy & Crunchy | High Protein | High Fibre | Vegan
Emma Basic£7.344.6★3,644 rev
Newest
by launch date
Chois 1 Trayless Seaweed Snack Korean Roasted Laver Eco-Friendly Packaging Healthy Vegan Snack Gluten-Free 20 X 4g Made in Korea
CHOI'S 1£9.74131 rev
itsu Seaweed Thins 5g | Crispy Seaweed Snacks | Vegan | Low Calorie | Healthy Snack | Sweet Soy & Salt | Pack of 20
Itsu£10.36773 rev
itsu Seaweed Thins 5g | Crispy Seaweed Snacks | Vegan | Low Calorie | Healthy Snack | Sea Salt | Pack of 20
Itsu£10.833,897 rev
itsu Seaweed Thins 5g | Crispy Seaweed Snacks | Vegan | Low Calorie | Healthy Snack | Sriracha | Pack of 20
Itsu£13.16140 rev
Emma Basic - South Korean Seaweed Sushi Nori 50 full sheets | Young & Crunchy | High Protein | High Fibre
Emma Basic£8.55286 rev
Trending
90-day click momentum
Yutaka Roasted Seaweed Sushi Nori 5 Sheets 11g
Yutaka£1.804.6★
itsu Seaweed Thins 5g | Crispy Seaweed Snacks | Vegan | Low Calorie | Healthy Snack | Sweet Soy & Salt | Pack of 20
Itsu£10.364.4★
itsu Crispy Seaweed Thins Sweet Soy & Sea Salt 4 x 5g (20g)
Itsu£2.344.2★
Blue Dragon Sushi Nori 11g | 5 Sheets | Authentic Dried & Roasted Seaweed | Suitable For Vegans
Blue Dragon£2.214.4★
itsu Seaweed Thins 5g | Crispy Seaweed Snacks | Vegan | Low Calorie | Healthy Snack | Sriracha | Pack of 20
Itsu£13.164.1★
What buyers say about seaweed
What buyers praise and complain about, mined from review topics.What buyers love
“Super tasty snack”
“perfect for making nori rolls, good quality and good price”
“Best Value”
“Nice and crispy”
“Good flavour”
“Low calorie”
“Very fresh”
“not too salty”
“Tasty, healthy snack that my whole family enjoys”
“Amazing Product - I used them for sushi”
What buyers complain about
“So it's not to everyone's taste”
“rather expensive”
“Awful flavour”
“not crisp at all”
“However the quality is inconsistent”
“Smaller than expected”
“Can cause severe skin rash and itchiness”
“False advertising”
“Salty snacks”
“One down side would be they are a little greasy on the fingers”
Common questions
- Is seaweed profitable to sell on Amazon United Kingdom?
- The niche generates £285K/yr across 21 tracked products. 90-day search growth is -11.2%. Flapen's verdict: Skip it (45/100).
- How competitive is the seaweed niche?
- 8 brands and 47 sellers compete. The top 5 products take 62% of clicks and top 5 brands hold 96% of demand.
- What do buyers complain about in seaweed?
- Top complaints mined from reviews: Taste-Overall, Value For Money, Flavor. The return rate is 0.0%.
- When does demand for seaweed peak?
- Demand is steady year-round — the busiest month runs 1.4× the quietest.
- What does it cost to enter the seaweed niche?
- Listings span £1.55–£14.86; the average listing price is £8.16 (sweet spot $15–$100). The average incumbent carries 1,019 reviews — the moat a new listing must climb.