---
title: "Uncle Fester Costume Adult — $58K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/clothing-shoes-jewelry/uncle-fester-costume-adult"
last_updated: "2026-08-09T16:01:41.008Z"
locale: en
meta:
description: "Niche score 40/100 · $58K/yr market · 155K searches/yr · $34.47 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 40/100 · $58K/yr market · 155K searches/yr · $34.47 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Uncle Fester Costume Adult — $58K/yr Amazon US Niche (2026) - Flapen"
---
# **uncle fester costume adult**
**Skip it**
High returns (11.5%) — this niche doesn't clear our bar today.
Market size 15Growth 22Conversion 14Competition 53Returns 2Price range 88Avg price 95Brand share 46Review moat 65Quality gap 83
**Avg price**
**Incredible****$34.47**
avg listing price — sweet spot $15–$100
**Price range**
**Great****$12.82–$105.51**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Quality gap**
**Great****4.2★**
avg incumbent rating — lower means beatable quality
**Review moat**
**Good****901.68**
avg incumbent reviews — the moat a new listing must climb
**Competition**
**Good****53%**
top-5 click share — leaders hold, buyers still browse
**Brand share**
**Okay****77%**
top-5 brand share — brands hold most of the demand
**Growth**
**Bad****-6.5%**
90-day search growth — must beat 0% to launch
**Market size**
**Bad****$58K**
$58K/yr · 155K searches
**Conversion**
**Bad****1.1%**
search→purchase rate — share of searches ending in a sale
**Returns**
**Bad****11.5%**
return rate — above 5% kills the launch gate
**Signals**[** High Returns**](https://flapen.com/research/niches?market=us&signal=high_returns "Return rate > 5%")
According to Flapen's Amazon United States niche tracking, uncle fester costume adult is a $58K/yr Amazon United States market (155K searches/yr). The top 5 brands hold 77% of demand. Demand peaks in Sep–Oct. Verdict: Skip it — 40/100.
Data updated Jul 17, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **uncle fester costume adult market data**
- **Units sold / yr**
- **2K–3K**
- avg 0–100/product
- **Revenue / yr**
- **$69K–$86K**
- units × avg price
- **Conversion rate**
- **1.1%**
- **Avg BSR**
- **#19,475**
- **Page quality**
- **0%**
- **Prime**
- **86%**
- **Sponsored**
- **50%**
- **Out of stock**
- **10.4%**
- **Avg brand age**
- **49 months**
- **Avg seller age**
- **173 days**
## **Competition & brand share**
The top 5 products take 53% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**16 **▲rising
**Sellers**
**23**
**Top-5 brand share**
**77%**
Top 20: 100%
**Top-5 click share**
**53%**
Top 20: 92%
**Open market**
**19%**
- PAINEOMN50% - Fun Costumes15% - WonShak5% - The Addams Family TV Series4% - Zadin4% - NTYNTY4%
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -6.5% search growth over the last 90 days.
25K15KSpike '24Spike '25Prime Day '25 seasonSepDecMarJunAugNovMarMay
Peak months: Sep, Oct · busiest ÷ quietest = 85.8×
[**Open Trend **](https://flapen.com/research/us/clothing-shoes-jewelry/uncle-fester-costume-adult/trend)
## **Top uncle fester costume adult search terms**
- **uncle fester costume**57K/yr+14.6%1.1% conv. - **uncle fester**14K/yr-18.0%0.4% conv. - **uncle fester costume adult**59K/yr-10.5%0.8% conv. - **fester addams costume**4K/yr+144.4%0.0% conv. - **fester costume**3K/yr-11.5%1.2% conv. - **uncle fester mask**6K/yr-22.6%1.0% conv. - **fester addams costume adult**13K/yr-73.5%1.3% conv. [**All search terms **](https://flapen.com/research/us/clothing-shoes-jewelry/uncle-fester-costume-adult/search-terms)
## **Top uncle fester costume adult 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%4%$2K8%$5K12%$7K16%$9K1101001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)1 product 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**Uncle Fester Costume Monk Robe Black Hooded Uniform with Cord Belt for Mens Halloween Cosplay Suit 2XL**PAINEOMN**$31.05**4.4★139 rev](https://www.amazon.com/dp/B0B1MB51NR) [2**Uncle Fester Costume Monk Robe Black Hooded Uniform with Cord Belt for Mens Halloween Cosplay Suit L**PAINEOMN**$30.88**4.4★139 rev](https://www.amazon.com/dp/B0B1MCC8X5) [3**Uncle Fester Costume Monk Robe Black Hooded Uniform with Cord Belt for Mens Halloween Cosplay Suit XL**PAINEOMN**$28.93**4.4★139 rev](https://www.amazon.com/dp/B0B1MB1SNY) [4**Addams Family Mens Uncle Fester Costume with Black Coat and Light Up Bulb Accessory | Creepy Halloween Cosplay Outfit Large**Fun Costumes**$72.18**4.0★5 rev](https://www.amazon.com/dp/B0FMBR9S54) [5**Addams Family Plus Size Mens Uncle Fester Costume with Coat & Light Up Bulb Accessory | Creepy Halloween Cosplay Outfit 2X**Fun Costumes**$105.51**5.0★1 rev](https://www.amazon.com/dp/B0FMBBCYGN)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Halloween Costume Set with Brown Textured Vest Green Character Ears Headband Nose Piece Adult Size (Brown Green L)**SUPWISER**$20.28**24 rev11mo ago](https://www.amazon.com/dp/B0FN3JY2T4) [**Addams Family Mens Uncle Fester Costume with Black Coat and Light Up Bulb Accessory | Creepy Halloween Cosplay Outfit Large**Fun Costumes**$72.18**5 rev11mo ago](https://www.amazon.com/dp/B0FMBR9S54) [**Addams Family Plus Size Mens Uncle Fester Costume with Coat & Light Up Bulb Accessory | Creepy Halloween Cosplay Outfit 2X**Fun Costumes**$105.51**1 rev11mo ago](https://www.amazon.com/dp/B0FMBBCYGN) [**Addams Family Mens Uncle Fester Costume with Black Coat and Light Up Bulb Accessory | Creepy Halloween Cosplay Outfit Medium**Fun Costumes**$67.98**5 rev11mo ago](https://www.amazon.com/dp/B0FMBKJS22) [**POEWAUVE Mens Uncle Costume Cosplay Set with Long Black Robe Cord Belt Bald Cap Wig Cap for Halloween Costume Party (standard)**POEWAUVE**$28.62**7 rev1y ago](https://www.amazon.com/dp/B0FJLCPNBC)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Halloween Costume Set with Brown Textured Vest Green Character Ears Headband Nose Piece Adult Size (Brown Green L)**SUPWISER**$20.28**3.9★**▲ 1000%**](https://www.amazon.com/dp/B0FN3JY2T4) [**Addams Family Mens Uncle Fester Costume with Black Coat and Light Up Bulb Accessory | Creepy Halloween Cosplay Outfit Large**Fun Costumes**$72.18**4.0★**▲ 1000%**](https://www.amazon.com/dp/B0FMBR9S54) [**Uncle Fester Costume Monk Robe Black Hooded Uniform with Cord Belt for Mens Halloween Cosplay Suit S**PAINEOMN**$31.87**4.4★**▲ 957%**](https://www.amazon.com/dp/B0B1MC33B2) [**WonShak Tunic Hooded Robe Monk Priest Black Cloak Halloween Costume Knight Hood Cape Men Renaissance Wizard Robe Large**WonShak**$12.82**4.2★**▲ 885%**](https://www.amazon.com/dp/B0D4TG6H53) [**The Addams Family TV Series Uncle Fester Graduation Spark Tote Bag**The Addams Family TV Series**$18.99**0.0★**▲ 800%**](https://www.amazon.com/dp/B0C23X3CR9)
**~~View all trending →~~**
## **What buyers say about uncle fester costume adult**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Size-Overall**33%
*“Costume fit was good with belt”*
**Value For Money**21%
*“Great deal”*
**Quality-Overall**8%
*“Great quality for the price”*
**Material Quality**6%
*“Material seems to be good quality”*
**Waist Fit**6%
*“Length and waist size seemed Ok”*
### **What buyers complain about **
**Durability**25%
*“I don't think it would hold up to multiple uses”*
**Size-Overall**13%
*“We returned as the arm size would have felt to tight”*
**Arm Fit**13%
*“The arm size runs a little small so I would suggest move up 1 size”*
### **Top return reasons **
**Size-Overall**43%
**Length**16%
**Color**6%
**Sleeve Fit**6%
**Material Quality**5%
**Advertised Vs Actual Product**3%
**Quality-Overall**3%
**Shoulder Fit**2%
**Smell**2%
**Stitch/Finish/Polish**2%
## **Common questions**
- **Is uncle fester costume adult profitable to sell on Amazon United States?**
- The niche generates $58K/yr across 28 tracked products. 0 of 4 products launched in the last 360 days are still selling. 90-day search growth is -6.5%. Flapen's verdict: Skip it (40/100).
- **How competitive is the uncle fester costume adult niche?**
- 16 brands and 23 sellers compete. The top 5 products take 53% of clicks and top 5 brands hold 77% of demand.
- **What do buyers complain about in uncle fester costume adult?**
- Top complaints mined from reviews: Durability, Size-Overall, Arm Fit. The return rate is 11.5% — above our launch gate.
- **When does demand for uncle fester costume adult peak?**
- Demand peaks in Sep–Oct; the busiest month runs 85.8× the quietest.
- **What does it cost to enter the uncle fester costume adult niche?**
- Listings span $12.82–$105.51; the average listing price is $34.47 (sweet spot $15–$100). The average incumbent carries 902 reviews — the moat a new listing must climb.
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