Skip to content

Shark Fin Swimming Aid

Maybe

Products sell for $17.50 on average, inside the sweet spot. But shoppers spend an estimated $6K a year here, so Shark Fin Swimming Aid is a Maybe.

Flapen Score
50
50 / 100
Ranks 386 of 792 Sports & Outdoors niches · on the category median
Market size
£6K/yr18K searches / yr
90-day growth
+72.1%search demand this quarter
Competition
52%top-5 click share · 16 brands · 34 sellers

Flapen Score

Shark Fin Swimming Aid against its category

The dotted line is the Sports & Outdoors average. Past it, Shark Fin Swimming Aid is stronger. Inside it, weaker.

50Maybe
Big MarketTrendingHigh ConversionOpen MarketLow ReturnsPrice rangeAvg priceNo Dominant BrandLow Review BarrierQuality Gap
This niche Category average

Market

The Shark Fin Swimming Aid market on Amazon at a glance

Shoppers on Amazon United Kingdom searched for Shark Fin Swimming Aid 18K times last year and spent an estimated £6K. The top 5 brands take 75% of clicks. Demand peaks in Jul–Aug. Flapen scores it 50 out of 100, a Maybe.

01 · Demand

An estimated 1.8% of those searches ended in a purchase.

Shoppers searched for this 18K times in the last 12 months. That counts every search on Amazon United Kingdom for this niche's terms. An estimated 1.8% of those searches ended in a purchase. Searches in the last 90 days moved +72.1% against the 90 days before. Searches, conversion and average price together put the market at an estimated £6K a year.

Searches, last 12 months
18K
Growth, 90 days vs prior 90
+72.1%
Conversion, latest week
1.8%
Market size, estimated
£6Ka year
Peak month
August3.0× the quietest month
Top search term
shark fin swimming aid11K searches a year

02 · Price

A sale here is worth £17.50.

Listings sell for £17.50 on average, from £7.94 to £27.10. Amazon reports units sold in ranges. This niche sold 250 to 500 a year. The average listing sells 0 to 100 of them. At £17.50 that is £0 to £2K a year per listing.

Average price
£17.50inside the $15 to $100 sweet spot
Price range
£7.94–£27.10
Amazon United Kingdom median price
£12.12across 27,606 niches
Units sold a year
250–500
Units per listing a year
0–100
Revenue per listing a year
£0–£2K
Returns
3.0%of orders · Amazon United Kingdom median 0.6%

03 · Entry bar

The bar here is reviews.

84% of listings pay for placement with sponsored ads. 97% ship with Prime. On an average day, 1.8% of listings are out of stock. The average listing ranks #155 within Water Sports. It carries 1,790 reviews at 4.28 stars, so a new listing needs social proof before a better product.

Sponsored listings
84%
Prime listings
97%
Out of stock, average day
1.8%
Average rank
#155in Water Sports
Average rating
4.28 starsAmazon United Kingdom average 4.36 stars
Average reviews
1,790per listing
Listings tracked
32

04 · Newcomers

0 of last year's 8 launches cleared the first-year sales bar.

8 products launched here in the last 12 months. 0 of them cleared the first-year sales bar, our mark for a successful launch. The brands on the shelf have sold for 48 months on average, so the names here are settling in.

Launched, last 12 months
8
Successful launches
0Amazon's first-year sales bar
Average brand age
48 months

Products

Top Shark Fin Swimming Aid products & what they sell for

The products selling here, as shoppers see them on Amazon. Shelf share and sales are our estimates.

Prices and ratings read from Amazon on Jul 29, 2026. The live listing can differ.

Competition

Competition: brands, sellers & click share

The top 5 products take an estimated 52% of clicks. Leaders hold, but buyers still shop past them.

£0£287£574£861£1K1101001K10K100K Review Count Sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

Brands

16 rising

Sellers

34

Est. top-5 brand share

75%

Top 20: 100%

Est. top-5 click share

52%

Top 20: 88%

Open market

19%

  • Sarini35%
  • Speedo13%
  • QcoQce11%
  • Azuunye10%
  • MARU7%
  • Vegena6%

Demand

Shark Fin Swimming Aid search demand

Weekly searches over the year, seasonality beneath. Pick a range.

1K600Spike '24Spike '25Prime Day '25Black Friday '25Spike '26Prime Day '26SepDecMarJunAugNovMarMay

Peak months: Jul, Aug · busiest ÷ quietest = 3.0×

Search terms

Top Shark Fin Swimming Aid search terms shoppers use

The exact words shoppers type, with estimated yearly volume, growth, and conversion.

  • shark fin swimming aid11K/yr
  • swim fin4K/yr
  • swimfin3K/yr

Reviews and returns

What reviews say buyers love and hate about Shark Fin Swimming Aid

We read the reviews and the return reasons for every product selling here.

20%of positive reviews mention “Size-Overall”
26%of negative reviews mention “Size-Overall”
3.0%of orders come back
“A little small”
A buyer, on “Size-Overall”26% of negative reviews mention the same topic

Every topic

Every topic buyers talk about, one row each.

Red shows the share of negative reviews and green the share of positive reviews, biggest topic first. Open a row to read what they wrote.

18 topics

NegativePositive

FAQ

Common Shark Fin Swimming Aid questions

Answered from the same tracked data.

Figures on this page are estimates modeled from public Amazon pages and third-party keyword data. Amazon does not supply them, and no connected seller's data is used. How we handle Amazon data