---
title: "Master Splinter Costume — $1K/mo Amazon US Product Research"
canonical_url: "https://flapen.com/research/us/clothing-shoes-jewelry/master-splinter-costume"
last_updated: "2026-08-12T11:26:48.189Z"
locale: en
meta:
description: "Amazon product research for master splinter costume: $1K/mo market, demand, competition, pricing, reviews & the verdict. Know if it's worth selling — Flapen."
"og:description": "Amazon product research for master splinter costume: $1K/mo market, demand, competition, pricing, reviews & the verdict. Know if it's worth selling — Flapen."
"og:title": "Master Splinter Costume — $1K/mo Amazon US Product Research"
---
# **Master Splinter Costume**
**Skip it**
A small market ($13K/yr) — this niche doesn't clear our bar today.
Market size 3Growth 23Conversion 12Competition 63Returns 11Price range 87Avg price 93Brand share 75Review moat 64Quality gap 78
**Avg price**
**Great****$22.33**
avg listing price — sweet spot $15–$100
**Price range**
**Great****$6.18–$89.44**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Quality gap**
**Great****4.3★**
avg incumbent rating — lower means beatable quality
**Brand share**
**Great****60%**
top-5 brand share — no brand owns this niche
**Review moat**
**Good****950.97**
avg incumbent reviews — the moat a new listing must climb
**Competition**
**Good****47%**
top-5 click share — leaders hold, buyers still browse
**Growth**
**Bad****-4.0%**
90-day search growth — must beat 0% to launch
**Conversion**
**Bad****0.9%**
search→purchase rate — share of searches ending in a sale
**Returns**
**Bad****9.0%**
return rate — above 5% kills the launch gate
**Market size**
**Bad****$13K**
$13K/yr · 62K searches
**Signals**[** High Returns**](https://flapen.com/research/niches?market=us&signal=high_returns "Return rate > 5%")
## **Is master splinter costume profitable on Amazon?**
According to Flapen's Amazon United States niche tracking, master splinter costume is a $13K/yr Amazon United States market (62K searches/yr). The top 5 brands hold 60% of demand. Demand peaks in Sep–Oct–Nov. Verdict: Skip it — 43/100.
Data updated Jul 17, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **master splinter costume market size & sales**
Units sold, revenue, conversion and listing quality across the tracked shelf.
- **Units sold / yr**
- **1K–2K**
- avg 0–100/product
- **Revenue / yr**
- **$28K–$33K**
- units × avg price
- **Conversion rate**
- **0.9%**
- **Avg BSR**
- **#44,143**
- **Page quality**
- **0%**
- **Prime**
- **88%**
- **Sponsored**
- **63%**
- **Out of stock**
- **8.0%**
- **Avg brand age**
- **59 months**
- **Avg seller age**
- **214 days**
## **Competition: brands, sellers & click share**
The top 5 products take 47% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**26 **▲rising
**Sellers**
**41**
**Top-5 brand share**
**60%**
Top 20: 95%
**Top-5 click share**
**47%**
Top 20: 87%
**Open market**
**36%**
- WonShak23% - GOLDSTITCH12% - Fun Costumes9% - HENGYUTOYMASK8% - Mustaches7% - California Costumes5%
## **master splinter costume demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -4.0% search growth over the last 90 days.
10K6KSpike '24Spike '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Sep, Oct, Nov · busiest ÷ quietest = 65.2×
[**Open Trend **](https://flapen.com/research/us/clothing-shoes-jewelry/master-splinter-costume/trend)
## **Top master splinter costume search terms shoppers use**
The exact queries shoppers type, with yearly volume, growth and conversion.
- **master splinter costume**32K/yr-1.7%1.7% conv. - **splinter costume**14K/yr+4.8%1.3% conv. - **splinter costume adult**6K/yr-25.1%4.3% conv. - **master splinter costume adult**9K/yr-52.9%1.8% conv. [**All search terms **](https://flapen.com/research/us/clothing-shoes-jewelry/master-splinter-costume/search-terms)
## **Top master splinter costume 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%$5178%$1K12%$2K16%$2K1101001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)2 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**WonShak Wizard Tunic Hooded Robe Monk Priest Cloak Halloween Costume Knight Hood Cape Men Renaissance Robe Burgundy Small**WonShak**$14.01**4.2★174 rev](https://www.amazon.com/dp/B0D4TL24VW) [2**GOLDSTITCH Men Hooded Robe Cloak Knight Fancy Cool Cosplay Costume**GOLDSTITCH**$17.03**4.4★16,994 rev](https://www.amazon.com/dp/B017MI4XF0) [3**Adult New Mutant Rat Head Animal Costume Face Splinter Halloween Mouse Mask Brown**HENGYUTOYMASK**$21.34**4.4★132 rev](https://www.amazon.com/dp/B0747Q7QSX) [4**Mustaches Self Adhesive Fake Mustache and Beard Novelty Shaolin False Facial Hair Costume Accessory for Adults White Color**Mustaches**$13.06**4.2★138 rev](https://www.amazon.com/dp/B00S433PNE) [5**WonShak Tunic Hooded Robe Monk Priest Black Cloak Halloween Costume Knight Hood Cape Men Renaissance Wizard Robe Small**WonShak**$10.91**4.2★174 rev](https://www.amazon.com/dp/B0D4TLXJBM)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Teenage Mutant Ninja Turtles Master Splinter Adult Halloween Costume with Robe Pants Gloves Headpiece Medium**Fun Costumes**$89.44**0 rev2mo ago](https://www.amazon.com/dp/B0H26W2J9N) [**Teenage Mutant Ninja Turtles Master Splinter Adult Halloween Costume with Robe Pants Gloves Headpiece Large**Fun Costumes**$87.68**0 rev2mo ago](https://www.amazon.com/dp/B0H26Y8F86) [**Halloween Costume Set with Brown Textured Vest Green Character Ears Headband Nose Piece Adult Size (Brown Green 2XL)**SUPWISER**$20.84**24 rev11mo ago](https://www.amazon.com/dp/B0FN34DV8P) [**EMORBALS Fake Mustache and Goatee Stick On Fake Goatee Costume Facial Hair for Adults Kids-White-Suitable for Children Over 3 Years Old**EMORBALS**$7.51**26 rev1y ago](https://www.amazon.com/dp/B0F9DWLFY3) [**Dajiahao Men Cosplay Cloak Robe Costume Adult Halloween Costume Tunic Hoodies Robe Cosplay Capes(brown-L)**Dajiahao**$16.56**37 rev1y ago](https://www.amazon.com/dp/B0F8BLHD2D)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Teenage Mutant Ninja Turtles Master Splinter Adult Halloween Costume with Robe Pants Gloves Headpiece Large**Fun Costumes**$87.68**0.0★**▲ 977%**](https://www.amazon.com/dp/B0H26Y8F86) [**Joyshop Mens Halloween Witch Cosplay Robe Costume Adult Hooded Cloak Cape Black 4XLarge**Joyshop**$13.45**4.3★**▲ 975%**](https://www.amazon.com/dp/B07TB6BRRZ) [**Teenage Mutant Ninja Turtles Master Splinter Adult Halloween Costume with Robe Pants Gloves Headpiece Medium**Fun Costumes**$89.44**0.0★**▲ 973%**](https://www.amazon.com/dp/B0H26W2J9N) [**GRAJTCIN Adult Wizard Costume Robe Witch Purple Cloak with Hood and Sleeves Vampire Cosplay Hooded Robe Halloween (Purple 140cm)**GRAJTCIN**$29.09**4.5★**▲ 955%**](https://www.amazon.com/dp/B0BY831DQL) [**JEMITOP Mens Vintage Renaissance Costume Long Sleeve Lace Up Shirts for Pirate Viking Medieval Vampire Halloween Cosplay Clothing Light Khaki L**JEMITOP**$23.87**4.5★**▲ 918%**](https://www.amazon.com/dp/B0CRZ389LR)
**~~View all trending →~~**
## **What reviews say buyers love and hate about master splinter costume**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Value For Money**18%
*“was a good price”*
**Quality-Overall**15%
*“Good accessories”*
**Comfort-Overall**10%
*“comfortable to wear”*
**Fun/Entertainment Experience**10%
*“Fun”*
**Material Quality**10%
*“Great material it was PERFECT”*
**Smell**10%
*“It looks and smells exactly how you want it to”*
**Size-Overall**5%
*“arrived timely and fit nicely”*
**Stitch/Finish/Polish**3%
*“Stitching is in place with no issues of coming apart”*
**Durability**3%
*“it definitely would hold up well for more frequent wear”*
### **What buyers complain about **
**Quality-Overall**19%
*“Cheap looking”*
**Adhesion/Stickiness**13%
*“Doesn't stick”*
**Size-Overall**13%
*“Smaller”*
**Print Quality**13%
*“Print stick onto itself and peeled up”*
**Allergies**6%
*“I am allergic to latex”*
**Smell**6%
*“I will admit that it does have a chemical plastic smell even after a couple days”*
**Value For Money**3%
*“A bit expensive for the quality”*
### **Top return reasons **
**Size-Overall**40%
**Length**17%
**Material Quality**6%
**Color**6%
**Advertised Vs Actual Product**4%
**Quality-Overall**4%
**Strength**2%
**Sleeve Fit**2%
**Adhesion/Stickiness**2%
**Value For Money**2%
## **Common master splinter costume questions**
- **Is master splinter costume profitable to sell on Amazon United States?**
- The niche generates $13K/yr across 32 tracked products. 0 of 3 products launched in the last 360 days are still selling. 90-day search growth is -4.0%. Flapen's verdict: Skip it (43/100).
- **How competitive is the master splinter costume niche?**
- 26 brands and 41 sellers compete. The top 5 products take 47% of clicks and top 5 brands hold 60% of demand.
- **What do buyers complain about in master splinter costume?**
- Top complaints mined from reviews: Quality-Overall, Adhesion/Stickiness, Size-Overall. The return rate is 9.0% — above our launch gate.
- **When does demand for master splinter costume peak?**
- Demand peaks in Sep–Oct–Nov; the busiest month runs 65.2× the quietest.
- **What does it cost to enter the master splinter costume niche?**
- Listings span $6.18–$89.44; the average listing price is $22.33 (sweet spot $15–$100). The average incumbent carries 951 reviews — the moat a new listing must climb.
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