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39

surströmming

Skip it

A concentrated shelf (top 5 take 100% of clicks) — this niche doesn't clear our bar today.

Market size 14Growth 16Conversion 21Competition 0Returns 100Price range 95Avg price 95Brand share 0Review moat 92Quality gap 83

Returns

Incredible0.0%

return rate — above 5% kills the launch gate

Avg price

Incredible£30.05

avg listing price — sweet spot $15–$100

Price range

Incredible£25.21–£33.08

cheapest to priciest tracked listing — scored on the share inside $15–$100

Review moat

Great167.5

avg incumbent reviews — the moat a new listing must climb

Quality gap

Great4.2★

avg incumbent rating — lower means beatable quality

Conversion

Bad1.6%

search→purchase rate — share of searches ending in a sale

Growth

Bad-18.8%

90-day search growth — must beat 0% to launch

Market size

Bad£56K

£56K/yr · 113K searches

Competition

Bad100%

top-5 click share — a locked-up shelf

Brand share

Bad100%

top-5 brand share — brand-locked demand

According to Flapen's Amazon United Kingdom niche tracking, surströmming is a £56K/yr Amazon United Kingdom market (113K searches/yr). The top 5 brands hold 100% of demand. Verdict: Skip it — 39/100.

Data updated Jul 24, 2026 · scored weekly · How we score niches

surströmming market data

Units sold / yr
1K–2K
avg 100–250/product
Revenue / yr
£38K–£45K
units × avg price
Conversion rate
1.6%
Avg BSR
#112
Page quality
0%
Prime
0%
Sponsored
25%
Out of stock
2.9%
Avg brand age
58 months
Avg seller age
165 days

Competition & brand share

The top 5 products capture 100% of clicks — a locked-up shelf that new listings rarely crack.

Brands

4 falling

Sellers

4

Top-5 brand share

100%

Top 20: 100%

Top-5 click share

100%

Top 20: 100%

Open market

0%

  • Soulgoods45%
  • Scandinavian Kitchen30%
  • AB Gösta H.F.18%
  • Best Natural by NJTrading7%

Demand

Weekly Amazon search volume, last 35 weeks — -18.8% search growth over the last 90 days.
5K3KHoliday '25Spike '26Prime Day '26Nov '25Dec '25Feb '26Mar '26Apr '26May '26Jun '26

Top surströmming search terms

  • surströmming66K/yr
  • surstromming27K/yr
  • surstromming fermented fish uk9K/yr
  • fermented fish6K/yr
  • surstromming fish4K/yr
All search terms

Top surströmming 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.

0%15%£8K30%£17K45%£25K60%£34K1101001K Reviews — right = deep review moat Market share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 4 tracked products in this niche — three views at once, no toggling.

What buyers say about surströmming

What buyers praise and complain about, mined from review topics.

What buyers love

Baking50%

“perfect with a bit of crusty bread”

Taste-Overall50%

“quite delish”

Common questions

Is surströmming profitable to sell on Amazon United Kingdom?
The niche generates £56K/yr across 4 tracked products. 90-day search growth is -18.8%. Flapen's verdict: Skip it (39/100).
How competitive is the surströmming niche?
4 brands and 4 sellers compete. The top 5 products take 100% of clicks and top 5 brands hold 100% of demand.
What does it cost to enter the surströmming niche?
Listings span £25.21–£33.08; the average listing price is £30.05 (sweet spot $15–$100). The average incumbent carries 168 reviews — the moat a new listing must climb.