---
title: "Mario and Luigi Costumes Kids — Amazon US Product Research"
canonical_url: "https://flapen.com/research/us/clothing-shoes-jewelry/mario-and-luigi-costumes-kids"
last_updated: "2026-08-12T10:14:35.530Z"
locale: en
meta:
description: "Amazon product research for mario and luigi costumes kids: demand, competition, pricing, reviews & the verdict. Know if it's worth selling — Flapen."
"og:description": "Amazon product research for mario and luigi costumes kids: demand, competition, pricing, reviews & the verdict. Know if it's worth selling — Flapen."
"og:title": "Mario and Luigi Costumes Kids — Amazon US Product Research"
---
# **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 20Price 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 5% kills the launch gate
**Market size**
**Bad****$16K**
$16K/yr · 33K searches
**Signals**[** High Returns**](https://flapen.com/research/niches?market=us&signal=high_returns "Return rate > 5%")
## **Is mario and luigi costumes kids profitable on Amazon?**
According to Flapen's Amazon United States niche tracking, mario and luigi costumes kids is a $16K/yr Amazon United States market (33K searches/yr). The top 5 brands hold 78% of demand. Demand peaks in Sep–Oct. Verdict: Skip it — 39/100.
Data updated Jul 10, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **mario and luigi costumes kids market size & sales**
Units sold, revenue, conversion and listing quality across the tracked shelf.
- **Units sold / yr**
- **500–750**
- avg 0–100/product
- **Revenue / yr**
- **$13K–$20K**
- units × avg price
- **Conversion rate**
- **1.9%**
- **Avg BSR**
- **#509**
- **Page quality**
- **0%**
- **Prime**
- **91%**
- **Sponsored**
- **82%**
- **Out of stock**
- **16.8%**
- **Avg brand age**
- **31 months**
- **Avg seller age**
- **182 days**
## **Competition: brands, sellers & click share**
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%**
Top 20: 100%
**Top-5 click share**
**47%**
Top 20: 96%
**Open market**
**16%**
- Nintendo30% - Disguise22% - Mavoka12% - QRT8% - CGD7% - Get Trend7% - Open — no brand owns it (5 brands, 16%)
## **mario and luigi costumes kids 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×
[**Open Trend **](https://flapen.com/research/us/clothing-shoes-jewelry/mario-and-luigi-costumes-kids/trend)
## **Top mario and luigi costumes kids search terms shoppers use**
The exact queries shoppers type, with yearly volume, growth and conversion.
- **mario and luigi costume kids**27K/yr+0.7%1.3% conv. - **kids mario and luigi costume**4K/yr-7.9%1.4% conv. - **mario luigi costume kids**2K/yr+29.8%1.5% conv. [**All search terms **](https://flapen.com/research/us/clothing-shoes-jewelry/mario-and-luigi-costumes-kids/search-terms)
## **Top mario and luigi costumes kids products & what they sell for**
Every tracked product — its share of the shelf, its review moat, and what it sells for.
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)**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)**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**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)**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**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**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)**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)**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)**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)**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)**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)**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)**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)**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**Mavoka**$23.29**4.4★**▲ 878%**](https://www.amazon.com/dp/B0CX1D87DQ)
**~~View all trending →~~**
## **What reviews say buyers love and hate about mario and luigi costumes kids**
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%
## **Common mario and luigi costumes kids questions**
- **Is mario and luigi costumes kids profitable to sell on Amazon United States?**
- The niche generates $16K/yr across 22 tracked products. 3 of 3 products launched in the last 360 days are still selling. 90-day search growth is +1.5%. Flapen's verdict: Skip it (39/100).
- **How competitive is the mario and luigi costumes kids niche?**
- 11 brands and 49 sellers compete. The top 5 products take 47% of clicks and top 5 brands hold 78% of demand.
- **What do buyers complain about in mario and luigi costumes kids?**
- Top complaints mined from reviews: Size-Overall, Quality-Overall, Product Condition. The return rate is 6.5% — above our launch gate.
- **When does demand for mario and luigi costumes kids peak?**
- Demand peaks in Sep–Oct; the busiest month runs 86.6× the quietest.
- **What does it cost to enter the mario and luigi costumes kids niche?**
- Listings span $15.75–$40.53; the average listing price is $26.65 (sweet spot $15–$100). The average incumbent carries 1,036 reviews — the moat a new listing must climb.
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