---
title: "Mermaid Party Bags — £19K/yr Amazon UK Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/uk/home-garden/mermaid-party-bags"
last_updated: "2026-08-01T01:33:43.936Z"
locale: en
meta:
description: "Niche score 52/100 · £19K/yr market · 49K searches/yr · £8.01 avg price. A small market ($19K/yr) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 52/100 · £19K/yr market · 49K searches/yr · £8.01 avg price. A small market ($19K/yr) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Mermaid Party Bags — £19K/yr Amazon UK Niche (2026) - Flapen"
---
# **mermaid party bags**
**Worth a look**
Shows low returns (0.7%), but a small market ($19K/yr) keeps it on the watch list.
Market size 5Growth 34Conversion 57Competition 76Returns 97Price range 21Avg price 22Brand share 95Review moat 92Quality gap 32
**Returns**
**Incredible****0.7%**
return rate — above 5% kills the launch gate
**Brand share**
**Incredible****40%**
top-5 brand share — no brand owns this niche
**Review moat**
**Great****154**
avg incumbent reviews — the moat a new listing must climb
**Competition**
**Great****39%**
top-5 click share — an open shelf
**Conversion**
**Good****4.8%**
search→purchase rate — share of searches ending in a sale
**Growth**
**Okay****+7.1%**
90-day search growth — must beat 0% to launch
**Quality gap**
**Okay****4.6★**
avg incumbent rating — lower means beatable quality
**Avg price**
**Bad****£8.01**
avg listing price — sweet spot $15–$100
**Price range**
**Bad****£2.85–£18.22**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Market size**
**Bad****£19K**
£19K/yr · 49K searches
**Signals**[** No Dominant Brand**](https://flapen.com/research/niches?market=uk&signal=no_dominant_brand "Top brand's click share < 20%") [** Low Review Barrier**](https://flapen.com/research/niches?market=uk&signal=low_review_barrier "Top brand's reviews < 500")
According to Flapen's Amazon United Kingdom niche tracking, mermaid party bags is a £19K/yr Amazon United Kingdom market (49K searches/yr). The top 5 brands hold 40% of demand. Demand peaks in Jan–Sep. Verdict: Worth a look — 52/100.
Data updated Jul 27, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **mermaid party bags market data**
- **Units sold / yr**
- **2K–3K**
- avg 0–100/product
- **Revenue / yr**
- **£16K–£20K**
- units × avg price
- **Conversion rate**
- **4.8%**
- **Avg BSR**
- **#1,074**
- **Page quality**
- **0%**
- **Prime**
- **97%**
- **Sponsored**
- **90%**
- **Out of stock**
- **22.2%**
- **Avg brand age**
- **27 months**
- **Avg seller age**
- **181 days**
## **Competition & brand share**
Clicks spread well past the top 5 (39% combined) — an open shelf where new products get seen.
**Brands**
**37 **▲rising
**Sellers**
**45**
**Top-5 brand share**
**40%**
Top 20: 84%
**Top-5 click share**
**39%**
Top 20: 82%
**Open market**
**56%**
- EETU11% - G.C10% - AMFUN7% - FACLJSSX6% - XJLANTTE6% - Matwsec4%
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — +7.1% search growth over the last 90 days.
2K2KSpike '24Spike '25Prime Day '25Spike '26Prime Day '26 seasonSepDecMarJunAugNovMarMay
Peak months: Jan, Sep · busiest ÷ quietest = 2.4×
[**Open Trend **](https://flapen.com/research/uk/home-garden/mermaid-party-bags/trend)
## **Top mermaid party bags search terms**
- **mermaid party bags**24K/yr-11.8%4.4% conv. - **mermaid party bags fillers**13K/yr+33.5%2.3% conv. - **mermaid party bag fillers**4K/yr+12.7%2.3% conv. - **mermaid gift bag**3K/yr+46.0%3.9% conv. - **mermaid party favours**3K/yr+27.9%0.5% conv. - **mermaid party bag**2K/yr+34.6%4.3% conv. [**All search terms **](https://flapen.com/research/uk/home-garden/mermaid-party-bags/search-terms)
## **Top mermaid party bags 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%3%£5636%£1K9%£2K12%£2K1101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)3 products missing review or click data not plotted
All 24 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Mermaid Party Favours 84pcs Mermaid Theme Party Favors Set-Mermaid Loot Bags Hair Clips Stickers Slap Bracelets etc Mermaid Birthday Party Favors for Girls Mermaid Birthday Decorations Supplies**EETU**£15.69**4.6★38 rev](https://www.amazon.co.uk/dp/B0CF8K615Y) [2**G.C Mermaid Party Bags Fillers Girls Party Favours with Invisible Ink Pen Notebook Stamp Slap Bands Scratch Art for Kids Mermaid Pinata Party Supplies Pre Filled Party Bags for Kids Girl**G.C**£16.21**4.7★90 rev](https://www.amazon.co.uk/dp/B0D2W423WH) [3**AMFUN 18PCS Mermaid Paper Party Bags Gift Paper Bags with Handles Snack Paper Gift Bags Candy Paper Bags for Childrens Birthday Party Ocean Themed Wedding Baby Shower-(21 * 15 * 8cm)**AMFUN**£5.54**4.6★29 rev](https://www.amazon.co.uk/dp/B0DSZ7XTQL) [4**FACLJSSX 84 PCS Mermaid Party Favor Mermaid Party Bags Gift Bags Tattoos Stickers Slap Bracelet Stickers Notebooks Pens Erasers for Birthday Mermaid Theme Party Gifts Bags**FACLJSSX**£11.41**5.0★6 rev](https://www.amazon.co.uk/dp/B0FCMWRQC1) [5**20 Pcs Mermaid Goodie Bags - Mermaid Party Favor Bags with Tail Stickers Under The Sea Paper Gift Bags Scale Party Bags for Kids Girls Under The Sea Themed Little Mermaids Party Decorations**XJLANTTE**£4.41**4.7★540 rev](https://www.amazon.co.uk/dp/B0CPY55CSW)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**CIRDOTSH Mermaid Party Bag Suffers Favors Birthday Party Decorations Supplies Little Mermaid Goodie Bags Fillers for Birthday Gifts 12 Set**CIRDOTSH**£12.05**0 rev2mo ago](https://www.amazon.co.uk/dp/B0GX2DWKZ5) [**Glitter Mermaid Party Favor Bags Mermaid Party Goodie Bags Party Favor Box Under the Sea Party Bags**Thirty and Thirsty**£8.34**0 rev3mo ago](https://www.amazon.co.uk/dp/B0GVL3B558) [**Mermaid Party Bag Fillers for Kids - 148PCS Party Favours with PE Bags Slap Bracelets Notebook Stickers Pencils Rings Give Away Girls for Pinata Fillers Birthday Toys Favours Class Rewards**Walkinbear**£13.97**0 rev6mo ago](https://www.amazon.co.uk/dp/B0GK9DD87F) [**Eurowrap Unicorn Medium Gift Bag Pink Present Bag with Rainbow Unicorn Cloud & Star Design Holographic Foil Finish & Ribbon Handles Birthday & Celebration Gift Packaging for Girls**Eurowrap**£2.96**4 rev7mo ago](https://www.amazon.co.uk/dp/B0G94P3J74) [**50 Pcs Mermaid Goodie Bags Gift Bags for Christmas Party Favor Plastic Gifts Mermaid Tail Treat Bag with Handles for Girls Kids Birthday Party Supplies Baby Shower Return Gifts Thank You Gift Bag**Matwsec**£4.39**3 rev8mo ago](https://www.amazon.co.uk/dp/B0FYGHZNZS)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**CIRDOTSH Mermaid Party Bag Suffers Favors Birthday Party Decorations Supplies Little Mermaid Goodie Bags Fillers for Birthday Gifts 12 Set**CIRDOTSH**£12.05**0.0★**▲ 263%**](https://www.amazon.co.uk/dp/B0GX2DWKZ5) [**Mermaid Party Bag Fillers for Kids - 148PCS Party Favours with PE Bags Slap Bracelets Notebook Stickers Pencils Rings Give Away Girls for Pinata Fillers Birthday Toys Favours Class Rewards**Walkinbear**£13.97**0.0★**▲ 262%**](https://www.amazon.co.uk/dp/B0GK9DD87F) [**Glitter Mermaid Party Favor Bags Mermaid Party Goodie Bags Party Favor Box Under the Sea Party Bags**Thirty and Thirsty**£8.34**0.0★**▲ 257%**](https://www.amazon.co.uk/dp/B0GVL3B558) [**Eurowrap Unicorn Medium Gift Bag Pink Present Bag with Rainbow Unicorn Cloud & Star Design Holographic Foil Finish & Ribbon Handles Birthday & Celebration Gift Packaging for Girls**Eurowrap**£2.96**4.4★**▲ 182%**](https://www.amazon.co.uk/dp/B0G94P3J74) [**32 PCS Stickers for Kids Party Bag fillers Mermaid Stickers Make a face Stickers for Kids Sticker Sheets for Children Stickers for Party Bags Kids Party Favor Supplies Holiday & Christmas Fun**Marajdeclat**£5.24**5.0★**▲ 140%**](https://www.amazon.co.uk/dp/B0FJFKNQMH)
**~~View all trending →~~**
## **What buyers say about mermaid party bags**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**28%
*“Good quality”*
**Gifting Purpose**11%
*“Present Bag”*
**Value For Money**11%
*“Great price for party bag fillers”*
**Durability**11%
*“Pretty and long lasting”*
**Advertised Vs Actual Product**11%
*“Just what I needed”*
**Adhesion/Stickiness**6%
*“Easy to use sticks well”*
**Storage Capacity**4%
*“This provides a good stock of different things to put into the bag”*
**Pen/Pencil Quality**4%
*“The pens look nice”*
**Fun/Entertainment Experience**4%
*“keep everyone happy”*
### **What buyers complain about **
**Size-Overall**33%
*“quite small”*
**Strength**25%
*“Too flimsy”*
**Advertised Vs Actual Product**8%
*“Title is misleading”*
**Quality-Overall**8%
*“Obviously these arent the best quality as these are never meant to be permanent toys”*
### **Top return reasons **
**Size-Overall**46%
**Advertised Vs Actual Product**15%
**Quality-Overall**10%
**Strength**8%
**Material Quality**6%
**Compatibility-Overall**4%
**Functionality-Overall**4%
**Ease Of Use**2%
**Thickness**2%
**Wrinkles**2%
## **Common questions**
- **Is mermaid party bags profitable to sell on Amazon United Kingdom?**
- The niche generates £19K/yr across 39 tracked products. 0 of 11 products launched in the last 360 days are still selling. 90-day search growth is +7.1%. Flapen's verdict: Worth a look (52/100).
- **How competitive is the mermaid party bags niche?**
- 37 brands and 45 sellers compete. The top 5 products take 39% of clicks and top 5 brands hold 40% of demand.
- **What do buyers complain about in mermaid party bags?**
- Top complaints mined from reviews: Size-Overall, Strength, Advertised Vs Actual Product. The return rate is 0.7%.
- **When does demand for mermaid party bags peak?**
- Demand peaks in Jan–Sep; the busiest month runs 2.4× the quietest.
- **What does it cost to enter the mermaid party bags niche?**
- Listings span £2.85–£18.22; the average listing price is £8.01 (sweet spot $15–$100). The average incumbent carries 154 reviews — the moat a new listing must climb.
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