---
title: "shark fin — Niche Verdict: Worth a look (59/100) | Amazon United States - Flapen"
canonical_url: "https://flapen.com/amazon/research/us/clothing-shoes-jewelry/shark-fin"
last_updated: "2026-07-14T04:28:54.793Z"
locale: en
meta:
  description: "shark fin shows a sweet-spot price point ($24.04 avg), but a failed launch gate (market size, growth, or returns) keeps it on the watch list."
  "og:description": "shark fin shows a sweet-spot price point ($24.04 avg), but a failed launch gate (market size, growth, or returns) keeps it on the watch list."
  "og:title": "shark fin — Niche Verdict: Worth a look (59/100) | Amazon United States - Flapen"
---

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# **shark fin**

**Worth a look**

Shows a sweet-spot price point ($24.04 avg), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.

Market size 19Growth 90Conversion 35Competition 63Returns 21Price range 86Avg price 95Brand share 73Review moat 69Quality gap 73

**Avg price**

**Incredible****$24.04**

avg listing price — sweet spot $15–$100

**Growth**

**Great****+97.0%**

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

**Price range**

**Great****$7.86–$74.78**

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

**Brand share**

**Good****61%**

top-5 brand share — brands hold most of the demand

**Quality gap**

**Good****4.3★**

avg incumbent rating — lower means beatable quality

**Review moat**

**Good****755.32**

avg incumbent reviews — the moat a new listing must climb

**Competition**

**Good****47%**

top-5 click share — leaders hold, buyers still browse

**Conversion**

**Okay****2.8%**

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

**Returns**

**Bad****6.9%**

return rate — above 6% kills the launch gate

**Market size**

**Bad****$75K**

$75K/yr · 111K searches

## **Competition**

The top 5 products take 47% of clicks — established leaders, but buyers still shop beyond them.

**Brands**

**23 **▲rising

**Sellers**

**33**

**Top-5 brand share**

**61%**

**Open market**

**35%**

- Fin Fun22% - Foyinbet15% - Civaner9% - Fun Express9% - Holyzuel6% - Prsca4%

## **Product shelf**

Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.

0%5%$4K10%$7K15%$11K20%$15K1101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales

Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 34 tracked products in this niche — three views at once, no toggling.

### **Top sellers**

by 90-day click share

[1![Fin Fun Shark Fin with Included Travel Bag - Adjustable Shark Costume for Swimming - Lightweight Snorkel or Pool Toy for Kids & Adults - (Gray)](https://m.media-amazon.com/images/I/51QOXrzR4lL.jpg)**Fin Fun Shark Fin with Included Travel Bag - Adjustable Shark Costume for Swimming - Lightweight Snorkel or Pool Toy for Kids & Adults - (Gray)**Fin Fun**$28.76**4.7★585 rev](https://www.amazon.com/dp/B096WHGCFG) [2![Civaner Shark Costume Fin Gray Shark Costume Props Easy to Wear Accessories for Adults Dog Cosplay(Classic)](https://m.media-amazon.com/images/I/51jOSgXdRaL.jpg)**Civaner Shark Costume Fin Gray Shark Costume Props Easy to Wear Accessories for Adults Dog Cosplay(Classic)**Civaner**$9.21**4.4★336 rev](https://www.amazon.com/dp/B09JKKTP3L) [3![Fun Express Shark Fin Accessory - Shark Costume for Kids & Adults with Adjustable Elastic Straps | Shark Tail Back Fin for Halloween Costume Parties & Beach Events | Easy Shark Outfit Accessories](https://m.media-amazon.com/images/I/41I9GK3p3NL.jpg)**Fun Express Shark Fin Accessory - Shark Costume for Kids & Adults with Adjustable Elastic Straps | Shark Tail Back Fin for Halloween Costume Parties & Beach Events | Easy Shark Outfit Accessories**Fun Express**$11.16**3.9★603 rev](https://www.amazon.com/dp/B00B1TJ31G) [4![Holyzuel Shark Adventure Costume Fin Gray Shark Accessory Costume Easy to Wear Play Costume Props for Adults Festivals Parties Events Cosplay Dive into a Sea of Fun](https://m.media-amazon.com/images/I/41v3+dhFPXL.jpg)**Holyzuel Shark Adventure Costume Fin Gray Shark Accessory Costume Easy to Wear Play Costume Props for Adults Festivals Parties Events Cosplay Dive into a Sea of Fun**Holyzuel**$9.40**3.8★42 rev](https://www.amazon.com/dp/B0CZTD6KWW) [5![Prsca Kids Short Swim Fins Lap Training Flippers for Pool Youth Beginners](https://m.media-amazon.com/images/I/41fEMOVpDbL.jpg)**Prsca Kids Short Swim Fins Lap Training Flippers for Pool Youth Beginners**Prsca**$22.00**4.8★392 rev](https://www.amazon.com/dp/B0B6ZCCH25)

**~~View all top sellers →~~**

### **Newest**

by launch date

[![SHARKMAN Super Swimmer Shark Swim Gear for Kids Great White Mask with Built-in Goggles Dorsal Fin Flippers & Web Gloves NEW Improved Straps & Buckles Fun Costume Pool Toy Ages 4-12](https://m.media-amazon.com/images/I/41ysreuycNL.jpg)**SHARKMAN Super Swimmer Shark Swim Gear for Kids Great White Mask with Built-in Goggles Dorsal Fin Flippers & Web Gloves NEW Improved Straps & Buckles Fun Costume Pool Toy Ages 4-12**Big Time Toys**$23.57**5 rev4mo ago](https://www.amazon.com/dp/B0GSCMPVH3) [![Fin Fun Mermaidens - Adult Mermaid Tails for Swimming for Women with Monofin Extra Small Barracuda Black](https://m.media-amazon.com/images/I/411cL0LiyNL.jpg)**Fin Fun Mermaidens - Adult Mermaid Tails for Swimming for Women with Monofin Extra Small Barracuda Black**Fin Fun**$74.78**16 rev5mo ago](https://www.amazon.com/dp/B0GLDQWB2D) [![Klyyo Clyro 14 Pcs Shark Birthday Party Decoration Shark Fin Heads Party Decorations Iridescent Ocean Wave Mat for Under The Sea Ocean Birthday Summer Sea Decorations](https://m.media-amazon.com/images/I/51E3Ng9VY2L.jpg)**Klyyo Clyro 14 Pcs Shark Birthday Party Decoration Shark Fin Heads Party Decorations Iridescent Ocean Wave Mat for Under The Sea Ocean Birthday Summer Sea Decorations**Klyyo Clyro**$14.04**3 rev6mo ago](https://www.amazon.com/dp/B0GDWG4FHT) [![Breling 9 Pcs Shark Theme Party Supplies Table Centerpieces Floor Decoration Shark Fin Table Cloth Decor Water Decoration for Birthday Ocean Summer Sea Party Supplies](https://m.media-amazon.com/images/I/516JVGf0r1L.jpg)**Breling 9 Pcs Shark Theme Party Supplies Table Centerpieces Floor Decoration Shark Fin Table Cloth Decor Water Decoration for Birthday Ocean Summer Sea Party Supplies**Breling**$13.34**7 rev11mo ago](https://www.amazon.com/dp/B0FJYF6C7K) [![MELUMILU Snorkel Fins Swim Fins Travel Size Short Adjustable for Snorkeling Diving Adult Men Women Open Heel Swimming Flippers (Black)](https://m.media-amazon.com/images/I/51NXuWL5mJL.jpg)**MELUMILU Snorkel Fins Swim Fins Travel Size Short Adjustable for Snorkeling Diving Adult Men Women Open Heel Swimming Flippers (Black)**MELUMILU**$23.30**137 rev1y ago](https://www.amazon.com/dp/B0F2MLDVD2)

**~~View all new products →~~**

### **Trending**

90-day click momentum

[![Foyinbet Kids Swim Fins Kids Flippers Short Youth Swimming Fins for Lap Swimming and Training for Children Girls Boys 2XS](https://m.media-amazon.com/images/I/41NPEzMOT9L.jpg)**Foyinbet Kids Swim Fins Kids Flippers Short Youth Swimming Fins for Lap Swimming and Training for Children Girls Boys 2XS**Foyinbet**$27.57**4.6★**▲ 238%**](https://www.amazon.com/dp/B0CXMSTJ56) [![MELUMILU Snorkel Fins Swim Fins Travel Size Short Adjustable for Snorkeling Diving Adult Men Women Open Heel Swimming Flippers (Black)](https://m.media-amazon.com/images/I/51NXuWL5mJL.jpg)**MELUMILU Snorkel Fins Swim Fins Travel Size Short Adjustable for Snorkeling Diving Adult Men Women Open Heel Swimming Flippers (Black)**MELUMILU**$23.30**4.4★**▲ 238%**](https://www.amazon.com/dp/B0F2MLDVD2) [![Foyinbet Kids Swim Fins Short Kids Fins Youth Swimming Flippers for Lap Swimming Training for Children Girls Boys Beginners 2XS](https://m.media-amazon.com/images/I/31B78vu6AfL.jpg)**Foyinbet Kids Swim Fins Short Kids Fins Youth Swimming Flippers for Lap Swimming Training for Children Girls Boys Beginners 2XS**Foyinbet**$28.00**4.6★**▲ 237%**](https://www.amazon.com/dp/B09TW6WKBK) [![Fin Fun Mermaidens - Adult Mermaid Tails for Swimming for Women with Monofin Extra Small Barracuda Black](https://m.media-amazon.com/images/I/411cL0LiyNL.jpg)**Fin Fun Mermaidens - Adult Mermaid Tails for Swimming for Women with Monofin Extra Small Barracuda Black**Fin Fun**$74.78**4.5★**▲ 234%**](https://www.amazon.com/dp/B0GLDQWB2D) [![Prsca Kids Short Swim Fins Lap Training Flippers for Pool Youth Beginners](https://m.media-amazon.com/images/I/41fEMOVpDbL.jpg)**Prsca Kids Short Swim Fins Lap Training Flippers for Pool Youth Beginners**Prsca**$22.00**4.8★**▲ 234%**](https://www.amazon.com/dp/B0B6ZCCH25)

**~~View all trending →~~**

## **Demand & seasonality**

Weekly Amazon search volume, last 104 weeks — +97.0% search growth over the last 90 days.

13K8KSpike '24Spike '25Prime Day '25Spike '26 seasonSepDecMarJunAugNovMarMay

Peak months: Jul, Oct · busiest ÷ quietest = 12.2×

## **Reviews**

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

### **What buyers love **

**Size-Overall**26%

*“They run true to size”*

**Quality-Overall**17%

*“Good quality”*

**Durability**5%

*“Durable”*

**Design-Overall**5%

*“Good build”*

**Strength**4%

*“Stands up nicely in a table”*

**Value For Money**4%

*“Great price for fun in the water”*

**Material Quality**4%

*“Great material”*

**Water Resistance**4%

*“The fins worked fine for swimming around on my float tube”*

**Fun/Entertainment Experience**4%

*“The design is fun and looks fantastic for parties, Halloween, or just playful dress-up”*

**Comfort-Overall**4%

*“comfortable”*

### **What buyers complain about **

**Size-Overall**38%

*“Didnt fit my car even though it said it would fit my car”*

**Compatibility-Overall**17%

*“Does not fit Lexus NX series”*

**Durability**7%

*“Breaks easily”*

**Strap/String Quality**7%

*“Flippers: a clip that holds the strap broke first time using them”*

**Advertised Vs Actual Product**6%

*“Does not fit as advertised”*

**Quality-Overall**4%

*“Trash”*

**Adhesion/Stickiness**2%

*“Better adhesive”*

**Suitable For Outdoor**1%

*“So if this is a for an outdoor party, be warned”*

**Maintenance And Repair**1%

*“This does not replace it at all”*

**Weight Heavy**1%

*“The product was bulky”*

### **Top return reasons **

**Size-Overall**68%

**Compatibility-Overall**17%

**Advertised Vs Actual Product**3%

**Defective Material/Parts**2%

**Functionality-Overall**1%

**Value For Money**1%

**Adhesion/Stickiness**1%

**Color**1%

**Strap/String Quality**1%

**Quality-Overall**1%