---
title: "mario and luigi costumes kids — Niche Verdict: Skip it (39/100) | Amazon United States - Flapen"
canonical_url: "https://flapen.com/amazon/research/us/clothing-shoes-jewelry/mario-and-luigi-costumes-kids"
last_updated: "2026-07-13T23:32:33.868Z"
locale: en
meta:
  description: "a small market ($16K/yr) — mario and luigi costumes kids doesn't clear our bar today."
  "og:description": "a small market ($16K/yr) — mario and luigi costumes kids doesn't clear our bar today."
  "og:title": "mario and luigi costumes kids — Niche Verdict: Skip it (39/100) | Amazon United States - Flapen"
---

Back to Flapen home

# **mario and luigi costumes kids**

**Skip it**

A small market ($16K/yr) — this niche doesn't clear our bar today.

Market size 4Growth 27Conversion 24Competition 64Returns 23Price range 95Avg price 95Brand share 45Review moat 62Quality gap 30

**Avg price**

**Incredible****$26.65**

avg listing price — sweet spot $15–$100

**Price range**

**Incredible****$15.75–$40.53**

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

**Competition**

**Good****47%**

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

**Review moat**

**Good****1,035.82**

avg incumbent reviews — the moat a new listing must climb

**Brand share**

**Okay****78%**

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

**Quality gap**

**Okay****4.6★**

avg incumbent rating — lower means beatable quality

**Growth**

**Okay****+1.5%**

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

**Conversion**

**Bad****1.9%**

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

**Returns**

**Bad****6.5%**

return rate — above 6% kills the launch gate

**Market size**

**Bad****$16K**

$16K/yr · 33K searches

## **Competition**

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

**Brands**

**11 **▲rising

**Sellers**

**49**

**Top-5 brand share**

**78%**

**Open market**

**16%**

- Nintendo30% - Disguise22% - Mavoka12% - QRT8% - CGD7% - Get Trend7% - Open — no brand owns it (5 brands, 16%)

## **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%4%$6608%$1K12%$2K16%$3K101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales

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

All 22 tracked products in this niche — three views at once, no toggling.

### **Top sellers**

by 90-day click share

[1![Nintendo Super Mario Brothers Boys Long Sleeve Onesie Zip Coverall with Hoodie Luigi Cosplay Zip Up Onesie for Kids (Green and Blue Size 7)](https://m.media-amazon.com/images/I/31OGMiDCM4L.jpg)**Nintendo Super Mario Brothers Boys Long Sleeve Onesie Zip Coverall with Hoodie Luigi Cosplay Zip Up Onesie for Kids (Green and Blue Size 7)**Nintendo**$28.00**4.8★246 rev](https://www.amazon.com/dp/B0D8MJJYS3) [2![Disguise Nintendo Super Mario Costume Officially Licensed Super Mario Brothers Boys Costume Classic Child Size Medium (7-8)](https://m.media-amazon.com/images/I/31ggyxxd-+L.jpg)**Disguise Nintendo Super Mario Costume Officially Licensed Super Mario Brothers Boys Costume Classic Child Size Medium (7-8)**Disguise**$26.14**4.6★7,924 rev](https://www.amazon.com/dp/B00JR4HBRK) [3![Plumber Costume for Kids Shirt Overalls Glove Boys Halloween Party Cosplay 3T Red](https://m.media-amazon.com/images/I/41Za5tcf41L.jpg)**Plumber Costume for Kids Shirt Overalls Glove Boys Halloween Party Cosplay 3T Red**Mavoka**$20.34**4.4★91 rev](https://www.amazon.com/dp/B0CX1K9LZB) [4![QRT Super Bros Costume Kit with Hat Mustaches Suspenders Gloves Buttons ang Glasses frame for Halloween Cosplay and Christmas (red&green)](https://m.media-amazon.com/images/I/41JeQjGYBgL.jpg)**QRT Super Bros Costume Kit with Hat Mustaches Suspenders Gloves Buttons ang Glasses frame for Halloween Cosplay and Christmas (red&green)**QRT**$22.71**4.5★140 rev](https://www.amazon.com/dp/B0F86JD1F1) [5![CGD Super Bros Costume Set with Hat Mustache Suspenders for Halloween Instant Dress Up Kit for Cosplay & Christmas](https://m.media-amazon.com/images/I/41gFg5JA2UL.jpg)**CGD Super Bros Costume Set with Hat Mustache Suspenders for Halloween Instant Dress Up Kit for Cosplay & Christmas**CGD**$19.85**4.6★45 rev](https://www.amazon.com/dp/B0GG77QVF5)

**~~View all top sellers →~~**

### **Newest**

by launch date

[![CGD Super Bros Costume Set with Hat Mustache Suspenders for Halloween Instant Dress Up Kit for Cosplay & Christmas](https://m.media-amazon.com/images/I/41gFg5JA2UL.jpg)**CGD Super Bros Costume Set with Hat Mustache Suspenders for Halloween Instant Dress Up Kit for Cosplay & Christmas**CGD**$19.85**45 rev6mo ago](https://www.amazon.com/dp/B0GG77QVF5) [![Super Mario Kids Baseball Cap & Sunglasses with UV Protection Adjustable Sun Hat Gaming Gifts for Boys Ages 614 (Green Super Mario)](https://m.media-amazon.com/images/I/410AORlOTNL.jpg)**Super Mario Kids Baseball Cap & Sunglasses with UV Protection Adjustable Sun Hat Gaming Gifts for Boys Ages 614 (Green Super Mario)**Get Trend**$20.86**146 rev6mo ago](https://www.amazon.com/dp/B0FTZKVXPY) [![Super Mario Kids Baseball Cap & Sunglasses with UV Protection Adjustable Sun Hat Gaming Gifts for Boys Ages 614 (Red Super Mario)](https://m.media-amazon.com/images/I/416j3gMV+ZL.jpg)**Super Mario Kids Baseball Cap & Sunglasses with UV Protection Adjustable Sun Hat Gaming Gifts for Boys Ages 614 (Red Super Mario)**Get Trend**$25.06**146 rev6mo ago](https://www.amazon.com/dp/B0FTZKYPZW) [![Humairc Super Bros Hats Accessories Set Mary Luigy Caps Mustaches Suspenders Gloves Buttons Halloween Cosplay Costume (GREEN&RED&SUSPENDER)](https://m.media-amazon.com/images/I/41jFskhMhoL.jpg)**Humairc Super Bros Hats Accessories Set Mary Luigy Caps Mustaches Suspenders Gloves Buttons Halloween Cosplay Costume (GREEN&RED&SUSPENDER)**Humairc**$24.78**227 rev1y ago](https://www.amazon.com/dp/B0FDQGPLHJ) [![QRT Super Bros Costume Kit with Hat Mustaches Suspenders Gloves Buttons ang Glasses frame for Halloween Cosplay and Christmas (red&green)](https://m.media-amazon.com/images/I/41JeQjGYBgL.jpg)**QRT Super Bros Costume Kit with Hat Mustaches Suspenders Gloves Buttons ang Glasses frame for Halloween Cosplay and Christmas (red&green)**QRT**$22.71**140 rev1y ago](https://www.amazon.com/dp/B0F86JD1F1)

**~~View all new products →~~**

### **Trending**

90-day click momentum

[![Nintendo Super Mario Brothers Boys Long Sleeve Onesie Zip Coverall with Hoodie Luigi Cosplay Zip Up Onesie for Kids (Green and Blue Size 14/16)](https://m.media-amazon.com/images/I/31OGMiDCM4L.jpg)**Nintendo Super Mario Brothers Boys Long Sleeve Onesie Zip Coverall with Hoodie Luigi Cosplay Zip Up Onesie for Kids (Green and Blue Size 14/16)**Nintendo**$38.57**4.8★**▲ 942%**](https://www.amazon.com/dp/B0D8MFSKHM) [![Super Mario Kids Baseball Cap & Sunglasses with UV Protection Adjustable Sun Hat Gaming Gifts for Boys Ages 614 (Green Super Mario)](https://m.media-amazon.com/images/I/410AORlOTNL.jpg)**Super Mario Kids Baseball Cap & Sunglasses with UV Protection Adjustable Sun Hat Gaming Gifts for Boys Ages 614 (Green Super Mario)**Get Trend**$20.86**4.7★**▲ 933%**](https://www.amazon.com/dp/B0FTZKVXPY) [![Super Mario Kids Baseball Cap & Sunglasses with UV Protection Adjustable Sun Hat Gaming Gifts for Boys Ages 614 (Red Super Mario)](https://m.media-amazon.com/images/I/416j3gMV+ZL.jpg)**Super Mario Kids Baseball Cap & Sunglasses with UV Protection Adjustable Sun Hat Gaming Gifts for Boys Ages 614 (Red Super Mario)**Get Trend**$25.06**4.7★**▲ 922%**](https://www.amazon.com/dp/B0FTZKYPZW) [![Nintendo Super Mario Bomber Jacket for Boys Mario and Luigi Bomber Jacket (Bros. Blue Size 5/6)](https://m.media-amazon.com/images/I/51WNNRaU7kL.jpg)**Nintendo Super Mario Bomber Jacket for Boys Mario and Luigi Bomber Jacket (Bros. Blue Size 5/6)**Nintendo**$40.53**4.8★**▲ 916%**](https://www.amazon.com/dp/B0BQP57SGV) [![Mavoka Plumber Costume for Kids Shirt Overalls Glove Boys Halloween Party Cosplay 7-8 Years Green](https://m.media-amazon.com/images/I/41ZDDdmi-jL.jpg)**Mavoka Plumber Costume for Kids Shirt Overalls Glove Boys Halloween Party Cosplay 7-8 Years Green**Mavoka**$23.29**4.4★**▲ 878%**](https://www.amazon.com/dp/B0CX1D87DQ)

**~~View all trending →~~**

## **Demand & seasonality**

Weekly Amazon search volume, last 104 weeks — +1.5% search growth over the last 90 days.

7K5KPrime Day '24Spike '24Spike '25Prime Day '25Spike '26 seasonSepDecMarJunAugNovMarMay

Peak months: Sep, Oct · busiest ÷ quietest = 86.6×

## **Reviews**

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

### **What buyers love **

**Value For Money**17%

*“Good for the price”*

**Quality-Overall**16%

*“The quality is excellent — the colors are vibrant”*

**Size-Overall**15%

*“they fit me pretty well”*

**Ease Of Use**5%

*“Simple”*

**Fun/Entertainment Experience**4%

*“Can be enjoyed by two children”*

**Advertised Vs Actual Product**4%

*“Just as advertised”*

**Color**4%

*“The colors are bright”*

**Adjustability/Rotatability/Reclining**3%

*“the suspenders adjust easily”*

**Comfort-Overall**3%

*“are very comfortable”*

**Material Quality**3%

*“the materials feel sturdy enough for a night of trick-or-treating or multiple wears”*

### **What buyers complain about **

**Size-Overall**23%

*“Too small”*

**Quality-Overall**8%

*“These are pretty cheap”*

**Product Condition**8%

*“It looks previously used”*

**Durability**5%

*“broke after one try”*

**Thickness**4%

*“Much thicker than expected”*

**Ease Of Cleaning**3%

*“the pair I did receive were dirty”*

**Material Quality**3%

*“the material is super cheap the buttons had to be sewn on”*

**Value For Money**2%

*“For $30 thats a shame”*

**Comfort-Overall**2%

*“It was very uncomfortable on my large head”*

**Shape/Style**2%

*“Dont really hold up their shape”*

### **Top return reasons **

**Size-Overall**65%

**Quality-Overall**6%

**Advertised Vs Actual Product**6%

**Product Condition**5%

**Material Quality**4%

**Value For Money**3%

**Defective Material/Parts**2%

**Adhesion/Stickiness**2%

**Length**2%

**Shape/Style**1%