---
title: "rosalina costume — Niche Verdict: Worth a look (56/100) | Amazon United States - Flapen"
canonical_url: "https://flapen.com/amazon/research/us/clothing-shoes-jewelry/rosalina-costume"
last_updated: "2026-07-14T03:31:36.529Z"
locale: en
meta:
  description: "rosalina costume shows a thin review moat (85 avg reviews), but a failed launch gate (market size, growth, or returns) keeps it on the watch list."
  "og:description": "rosalina costume shows a thin review moat (85 avg reviews), but a failed launch gate (market size, growth, or returns) keeps it on the watch list."
  "og:title": "rosalina costume — Niche Verdict: Worth a look (56/100) | Amazon United States - Flapen"
---

Back to Flapen home

# **rosalina costume**

**Worth a look**

Shows a thin review moat (85 avg reviews), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.

Market size 25Growth 85Conversion 10Competition 55Returns 42Price range 92Avg price 95Brand share 53Review moat 96Quality gap 65

**Review moat**

**Incredible****84.92**

avg incumbent reviews — the moat a new listing must climb

**Avg price**

**Incredible****$33.41**

avg listing price — sweet spot $15–$100

**Price range**

**Great****$13.12–$57.95**

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

**Growth**

**Great****+86.2%**

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

**Quality gap**

**Good****4.4★**

avg incumbent rating — lower means beatable quality

**Competition**

**Good****52%**

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

**Brand share**

**Good****73%**

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

**Returns**

**Okay****4.0%**

return rate — above 6% kills the launch gate

**Market size**

**Okay****$101K**

$101K/yr · 393K searches

**Conversion**

**Bad****0.8%**

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

## **Competition**

The top 5 products take 52% of clicks — established leaders, but buyers still shop beyond them.

**Brands**

**17 **▼falling

**Sellers**

**36**

**Top-5 brand share**

**73%**

**Open market**

**22%**

- The Super Mario Galaxy Movie34% - Szytypyl12% - Binbo11% - Mukola9% - Anjite7% - ZIW5%

## **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%10%$10K20%$20K30%$30K40%$40K1101001K Reviews — right = deep review moatMarket share (90d) ≈ est. sales

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

All 26 tracked products in this niche — three views at once, no toggling.

### **Top sellers**

by 90-day click share

[1![The Super Mario Galaxy Movie Girls Fantasy Gown Nightgown ROSALINA FANTASY GOWN 3T](https://m.media-amazon.com/images/I/51yxeubVvRL.jpg)**The Super Mario Galaxy Movie Girls Fantasy Gown Nightgown ROSALINA FANTASY GOWN 3T**The Super Mario Galaxy Movie**$24.01**4.9★34 rev](https://www.amazon.com/dp/B0GLRCTXLP) [2![Binbo Princess Rosalian Costume Dress kids Grils Halloween Cosplay Birthday Party Outfit 5-6Y](https://m.media-amazon.com/images/I/51Z-19M6KuL.jpg)**Binbo Princess Rosalian Costume Dress kids Grils Halloween Cosplay Birthday Party Outfit 5-6Y**Binbo**$35.43**4.8★26 rev](https://www.amazon.com/dp/B0GVDVBBKW) [3![Szytypyl Princess Rosalina Costume for Girls One Shoulder Fancy Dress Gowns with Accessories Green](https://m.media-amazon.com/images/I/41I1KP+C8nL.jpg)**Szytypyl Princess Rosalina Costume for Girls One Shoulder Fancy Dress Gowns with Accessories Green**Szytypyl**$39.60**4.9★27 rev](https://www.amazon.com/dp/B0GW842G8T) [4![Mukola Kids Princess Costume Girls Galaxy Movie Off Shoulder Fancy Dress with Crown Wand Accessories Cosplay Party](https://m.media-amazon.com/images/I/41wrdK22zUL.jpg)**Mukola Kids Princess Costume Girls Galaxy Movie Off Shoulder Fancy Dress with Crown Wand Accessories Cosplay Party**Mukola**$35.29**3.9★15 rev](https://www.amazon.com/dp/B0GSZGGG4S) [5![ZIW Princess Rosalina Costume Kids Girls Blue Dress with Wig Wand Crown Earrings Plush Galaxy Princess Outfit for Halloween Party Dress Up ZW264L](https://m.media-amazon.com/images/I/41nOlEISvKL.jpg)**ZIW Princess Rosalina Costume Kids Girls Blue Dress with Wig Wand Crown Earrings Plush Galaxy Princess Outfit for Halloween Party Dress Up ZW264L**ZIW**$39.69**4.5★14 rev](https://www.amazon.com/dp/B0GTMF9X8G)

**~~View all top sellers →~~**

### **Newest**

by launch date

[![Anjite Girls Galaxy Princess Rosalina Costume Kids Royal Dress Up with Teal Maxi Dress Wig Crown Wand Earrings for Halloween AJ097L](https://m.media-amazon.com/images/I/418bngttGoL.jpg)**Anjite Girls Galaxy Princess Rosalina Costume Kids Royal Dress Up with Teal Maxi Dress Wig Crown Wand Earrings for Halloween AJ097L**Anjite**$40.66**8 rev2mo ago](https://www.amazon.com/dp/B0GZWNJZ2N) [![Girls Princess Rosalina Costume Dress with Accessories Blue Princess Dress with Wig Wand Crown Earrings and Star Earrings AJ081M](https://m.media-amazon.com/images/I/41ijUp8xPRL.jpg)**Girls Princess Rosalina Costume Dress with Accessories Blue Princess Dress with Wig Wand Crown Earrings and Star Earrings AJ081M**Anjite**$36.96**3 rev2mo ago](https://www.amazon.com/dp/B0GY89M86X) [![Szytypyl Princess Rosalina Costume for Girls One Shoulder Fancy Dress Gowns with Accessories Green](https://m.media-amazon.com/images/I/41I1KP+C8nL.jpg)**Szytypyl Princess Rosalina Costume for Girls One Shoulder Fancy Dress Gowns with Accessories Green**Szytypyl**$39.60**27 rev3mo ago](https://www.amazon.com/dp/B0GW842G8T) [![Szytypyl Princess Rosalina Costume for Girls One Shoulder Fancy Dress Gowns with Accessories Green](https://m.media-amazon.com/images/I/41I1KP+C8nL.jpg)**Szytypyl Princess Rosalina Costume for Girls One Shoulder Fancy Dress Gowns with Accessories Green**Szytypyl**$38.94**27 rev3mo ago](https://www.amazon.com/dp/B0GW87885M) [![Binbo Grils Princess Rosalian Costume Dress kids Halloween Cosplay Birthday Party Outfit 11-12Y](https://m.media-amazon.com/images/I/51Uzq5NpY1L.jpg)**Binbo Grils Princess Rosalian Costume Dress kids Halloween Cosplay Birthday Party Outfit 11-12Y**Binbo**$38.07**3 rev3mo ago](https://www.amazon.com/dp/B0GVJJ3VK8)

**~~View all new products →~~**

### **Trending**

90-day click momentum

[![Anjite Girls Galaxy Princess Rosalina Costume Kids Royal Dress Up with Teal Maxi Dress Wig Crown Wand Earrings for Halloween AJ097L](https://m.media-amazon.com/images/I/418bngttGoL.jpg)**Anjite Girls Galaxy Princess Rosalina Costume Kids Royal Dress Up with Teal Maxi Dress Wig Crown Wand Earrings for Halloween AJ097L**Anjite**$40.66**4.7★**▲ 56%**](https://www.amazon.com/dp/B0GZWNJZ2N) [![IDOTTA Girls Princess Costume for Kids Cosplay Fancy Dress up with Crown Magic Wand](https://m.media-amazon.com/images/I/41YB5Vp+QjL.jpg)**IDOTTA Girls Princess Costume for Kids Cosplay Fancy Dress up with Crown Magic Wand**IDOTTA**$26.99**2.0★**▲ 56%**](https://www.amazon.com/dp/B0G2PQQK7D) [![CPHDXU Princess Costume Dress for Girls Birthday Halloween Cosplay Dress Up With Crown Earrings Brooch Star Stick Accessories (11Years-12Years)](https://m.media-amazon.com/images/I/41x3nGyz-nL.jpg)**CPHDXU Princess Costume Dress for Girls Birthday Halloween Cosplay Dress Up With Crown Earrings Brooch Star Stick Accessories (11Years-12Years)**CPHDXU**$34.29**5.0★**▲ 56%**](https://www.amazon.com/dp/B0GTLGDS2F) [![Szytypyl Princess Rosalina Costume for Girls One Shoulder Fancy Dress Gowns with Accessories Green](https://m.media-amazon.com/images/I/41I1KP+C8nL.jpg)**Szytypyl Princess Rosalina Costume for Girls One Shoulder Fancy Dress Gowns with Accessories Green**Szytypyl**$39.60**4.9★**▲ 56%**](https://www.amazon.com/dp/B0GW842G8T) [![Girls Princess Rosalina Costume Dress with Accessories Blue Princess Dress with Wig Wand Crown Earrings and Star Earrings AJ081M](https://m.media-amazon.com/images/I/41ijUp8xPRL.jpg)**Girls Princess Rosalina Costume Dress with Accessories Blue Princess Dress with Wig Wand Crown Earrings and Star Earrings AJ081M**Anjite**$36.96**4.0★**▲ 56%**](https://www.amazon.com/dp/B0GY89M86X)

**~~View all trending →~~**

## **Demand & seasonality**

Weekly Amazon search volume, last 104 weeks — +86.2% search growth over the last 90 days.

20K15KSpike '24Spike '25Prime Day '25Spike '26 seasonSepDecMarJunAugNovMarMay

Peak months: Apr, Sep, Oct · busiest ÷ quietest = 17.3×

## **Reviews**

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

### **What buyers love **

**Quality-Overall**44%

*“Shirt is of decent quality”*

**Size-Overall**31%

*“It fits perfect”*

**Durability**5%

*“Durable material and very reliable”*

**Material Quality**4%

*“Durable material and very reliable”*

**Value For Money**3%

*“Well worth the money”*

**Soft Feel**2%

*“The dress is silky soft. it's wrinkled in the photo”*

**Ease Of Use**1%

*“It is easy to put on”*

**Print Quality**1%

*“Print quality / design - see photos”*

**Design-Overall**1%

*“I love how they designed this”*

### **What buyers complain about **

**Size-Overall**42%

*“But my grand daughter was so sad that it didnt fit”*

**Brightness/Shine/Glow**18%

*“gets glitter everywhere”*

**Advertised Vs Actual Product**8%

*“Inaccurate picture”*

**Product Condition**5%

*“Size up, this shirt must have been somebody else return, the tag inside is faded”*

**Durability**5%

*“gems fell off easy”*

**Value For Money**5%

*“Waste of time and money”*

**Quality-Overall**3%

*“Very bad quality”*

### **Top return reasons **

**Size-Overall**68%

**Chest Fit**5%

**Advertised Vs Actual Product**5%

**Material Quality**3%

**Value For Money**2%

**Wig/Artificial Hair Quality**2%

**Length**2%

**Quality-Overall**2%

**Stitch/Finish/Polish**2%

**Gap/Hole**2%