---
title: "Professor Trelawney Costumes — $30K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/clothing-shoes-jewelry/professor-trelawney-costumes"
last_updated: "2026-08-11T08:52:37.221Z"
locale: en
meta:
description: "Niche score 35/100 · $30K/yr market · 24K searches/yr · $39.55 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 35/100 · $30K/yr market · 24K searches/yr · $39.55 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Professor Trelawney Costumes — $30K/yr Amazon US Niche (2026) - Flapen"
---
# **professor trelawney costumes**
**Skip it**
A small market ($30K/yr) — this niche doesn't clear our bar today.
Market size 7Growth 21Conversion 40Competition 24Returns 24Price range 68Avg price 95Brand share 54Review moat 46Quality gap 55
**Avg price**
**Incredible****$39.55**
avg listing price — sweet spot $15–$100
**Price range**
**Good****$6.11–$130.97**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Quality gap**
**Good****4.4★**
avg incumbent rating — lower means beatable quality
**Brand share**
**Good****73%**
top-5 brand share — brands hold most of the demand
**Review moat**
**Okay****1,903.15**
avg incumbent reviews — the moat a new listing must climb
**Conversion**
**Okay****3.2%**
search→purchase rate — share of searches ending in a sale
**Competition**
**Bad****72%**
top-5 click share — a locked-up shelf
**Returns**
**Bad****5.3%**
return rate — above 5% kills the launch gate
**Growth**
**Bad****-9.0%**
90-day search growth — must beat 0% to launch
**Market size**
**Bad****$30K**
$30K/yr · 24K searches
**Signals**[** Low Review Barrier**](https://flapen.com/research/niches?market=us&signal=low_review_barrier "Top brand's reviews < 500") [** High Returns**](https://flapen.com/research/niches?market=us&signal=high_returns "Return rate > 5%")
According to Flapen's Amazon United States niche tracking, professor trelawney costumes is a $30K/yr Amazon United States market (24K searches/yr). The top 5 brands hold 73% of demand. Verdict: Skip it — 35/100.
Data updated Jul 10, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **professor trelawney costumes market data**
- **Units sold / yr**
- **500–750**
- avg 0–100/product
- **Revenue / yr**
- **$20K–$30K**
- units × avg price
- **Conversion rate**
- **3.2%**
- **Avg BSR**
- **#4,661**
- **Page quality**
- **0%**
- **Prime**
- **69%**
- **Sponsored**
- **38%**
- **Out of stock**
- **16.5%**
- **Avg brand age**
- **56 months**
- **Avg seller age**
- **206 days**
## **Competition & brand share**
The top 5 products capture 72% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**12 **▲rising
**Sellers**
**11**
**Top-5 brand share**
**73%**
Top 20: 100%
**Top-5 click share**
**72%**
Top 20: 100%
**Open market**
**20%**
- Disguise28% - elope20% - Iconikal9% - Fun Costumes8% - KMAZN8% - Tigeen7%
## **Demand**
Weekly Amazon search volume, last 36 weeks — -9.0% search growth over the last 90 days.
2K2KSpike '26Nov '25Dec '25Jan '26Mar '26Apr '26May '26
[**Open Trend **](https://flapen.com/research/us/clothing-shoes-jewelry/professor-trelawney-costumes/trend)
## **Top professor trelawney costumes search terms**
- **professor trelawney costumes**16K/yr-22.3%1.8% conv. - **trelawney costume**4K/yr+9.3%0.6% conv. - **professor trelawney costume**4K/yr+16.7%0.8% conv. [**All search terms **](https://flapen.com/research/us/clothing-shoes-jewelry/professor-trelawney-costumes/search-terms)
## **Top professor trelawney costumes 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%10%$3K20%$6K30%$9K40%$12K1101001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 13 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Disguise Harry Potter Professor Trelawney Deluxe Adult Costume Officially Licensed Halloween Costume Outfit Size (12-14)**Disguise**$61.80**5.0★4 rev](https://www.amazon.com/dp/B0D68R19WW) [2**elope Professor Trelawney Headscarf Kit Standard**elope**$6.88**4.8★7 rev](https://www.amazon.com/dp/B0BS2FLKXV) [3**Iconikal Thick Lens Nerd Costume Glasses Small Black 5.5x2.1-Inch Plastic Frames Wizard Scientist Dress-Up Halloween Cosplay Party Accessory**Iconikal**$6.11**4.1★272 rev](https://www.amazon.com/dp/B09TBHGKVX) [4**KMAZN Womens Casual Loose Long Cotton Bib Overalls Baggy Linen Plus Size Jumpsuits Rompers Wide Leg Pants QG5 001 L**KMAZN**$17.67**3.9★1,413 rev](https://www.amazon.com/dp/B09NMKNMGW) [5**Tigeen 3 Pcs Halloween Costume Professor Nerd Dress up Costume Set Wig Halloween Movie Cosplay Punk Wig Thick Lens Nerd Glasses Blonde Long Curly Fluffy Hair Boho Wide Headbands for Women Cosplay**Tigeen**$19.18**4.2★24 rev](https://www.amazon.com/dp/B0C5HHXNN3)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Coume 4 Pcs Halloween Professor Costume Skirt Vest Headband Punk Wig for Movie Cosplay Halloween Women Dress up**Coume**$36.24**3 rev11mo ago](https://www.amazon.com/dp/B0FL2GXNL8) [**Maiteenly Halloween Professor Costume Halloween Wizard Wig Suede Vest Headband Glasses Canvas Bag for Nerd Prophecy Teacher Cosplay**Maiteenly**$33.32**7 rev1y ago](https://www.amazon.com/dp/B0DCG8CJPD) [**Disguise Harry Potter Professor Trelawney Deluxe Adult Costume Officially Licensed Halloween Costume Outfit Size (12-14)**Disguise**$61.80**4 rev2y ago](https://www.amazon.com/dp/B0D68R19WW) [**Tigeen 3 Pcs Halloween Costume Professor Nerd Dress up Costume Set Wig Halloween Movie Cosplay Punk Wig Thick Lens Nerd Glasses Blonde Long Curly Fluffy Hair Boho Wide Headbands for Women Cosplay**Tigeen**$19.18**24 rev3y ago](https://www.amazon.com/dp/B0C5HHXNN3) [**Plus Size Professor Trelawney Costume for Women - Deluxe Harry Potter Dress Skirt Vest Headband & Eyeglasses 1X**Fun Costumes**$130.97**15 rev3y ago](https://www.amazon.com/dp/B0BWPHJH2G)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Plus Size Professor Trelawney Costume for Women - Deluxe Harry Potter Dress Skirt Vest Headband & Eyeglasses 1X**Fun Costumes**$130.97**4.9★**▲ 425%**](https://www.amazon.com/dp/B0BWPHJH2G) [**JOEYOUNG Headwear Bandana Neck Gaiter Head Wrap Headband Balaclava Magic Scarf**JOEYOUNG**$12.38**4.4★**▲ 412%**](https://www.amazon.com/dp/B0B74HGMF5) [**elope Professor Trelawney Headscarf Kit Standard**elope**$6.88**4.8★**▲ 325%**](https://www.amazon.com/dp/B0BS2FLKXV) [**Fun Costumes Deluxe Harry Potter Professor Trelawney Costume for Women with Dress Skirt Vest Headband and Eyeglasses Medium**Fun Costumes**$124.94**4.8★**▲ 263%**](https://www.amazon.com/dp/B0BWFT2R5D) [**Exotic India Long Printed Dori Skirt from Gujarat with Patch Work - Rayon - Color Beige**Exotic India**$27.36**4.1★**▲ 120%**](https://www.amazon.com/dp/B009YYZ55I)
**~~View all trending →~~**
## **What buyers say about professor trelawney costumes**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Comfort-Overall**13%
*“Very comfortable”*
**Advertised Vs Actual Product**13%
*“It is exactly as described”*
**Fun/Entertainment Experience**10%
*“Great fun product,”*
**Value For Money**8%
*“at a more affordable price”*
**Material Quality**7%
*“good material”*
**Color**6%
*“Love the colors”*
**Quality-Overall**6%
*“High quality”*
**Size-Overall**6%
*“The size is perfect”*
**Exercise/Sports Suitability**4%
*“Great for running and fitness activities”*
**Durability**3%
*“they last :”*
### **What buyers complain about **
**Size-Overall**35%
*“I admit to being short”*
**Material Quality**9%
*“Cheap plastic crap”*
**Stretchability/Expandability/Elasticity**8%
*“not stretchy enough”*
**Advertised Vs Actual Product**6%
*“Not true to image”*
**Quality-Overall**5%
*“Cheaply made”*
**Stitch/Finish/Polish**5%
*“No edge stitched into top and bottom”*
**Color**3%
*“not the same color as the image”*
**Print Quality**3%
*“no paisley print either”*
**Smell**3%
*“They smelled a bit when they first arrived”*
**Thigh Fit**3%
*“kind of tight on my hips even though it's the right size”*
### **Top return reasons **
**Size-Overall**28%
**Material Quality**11%
**Color**8%
**Waist Fit**8%
**Advertised Vs Actual Product**7%
**Length**7%
**Thin**5%
**Hip Fit**5%
**Shape/Style**3%
**Print Quality**3%
## **Common questions**
- **Is professor trelawney costumes profitable to sell on Amazon United States?**
- The niche generates $30K/yr across 13 tracked products. 0 of 1 products launched in the last 360 days are still selling. 90-day search growth is -9.0%. Flapen's verdict: Skip it (35/100).
- **How competitive is the professor trelawney costumes niche?**
- 12 brands and 11 sellers compete. The top 5 products take 72% of clicks and top 5 brands hold 73% of demand.
- **What do buyers complain about in professor trelawney costumes?**
- Top complaints mined from reviews: Size-Overall, Material Quality, Stretchability/Expandability/Elasticity. The return rate is 5.3% — above our launch gate.
- **What does it cost to enter the professor trelawney costumes niche?**
- Listings span $6.11–$130.97; the average listing price is $39.55 (sweet spot $15–$100). The average incumbent carries 1,903 reviews — the moat a new listing must climb.
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