professor trelawney costumes
Skip itA small market ($30K/yr) — this niche doesn't clear our bar today.
Avg price
Incredible$39.55avg listing price — sweet spot $15–$100
Price range
Good$6.11–$130.97cheapest to priciest tracked listing — scored on the share inside $15–$100
Quality gap
Good4.4★avg incumbent rating — lower means beatable quality
Brand share
Good73%top-5 brand share — brands hold most of the demand
Review moat
Okay1,903.15avg incumbent reviews — the moat a new listing must climb
Conversion
Okay3.2%search→purchase rate — share of searches ending in a sale
Competition
Bad72%top-5 click share — a locked-up shelf
Returns
Bad5.3%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
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
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.Top professor trelawney costumes search terms
- professor trelawney costumes16K/yr
- trelawney costume4K/yr
- professor trelawney costume4K/yr
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.
All 13 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Disguise Harry Potter Professor Trelawney Deluxe Adult Costume Officially Licensed Halloween Costume Outfit Size (12-14)
Disguise$61.805.0★4 rev
elope Professor Trelawney Headscarf Kit Standard
elope$6.884.8★7 rev
Iconikal Thick Lens Nerd Costume Glasses Small Black 5.5x2.1-Inch Plastic Frames Wizard Scientist Dress-Up Halloween Cosplay Party Accessory
Iconikal$6.114.1★272 rev
KMAZN Womens Casual Loose Long Cotton Bib Overalls Baggy Linen Plus Size Jumpsuits Rompers Wide Leg Pants QG5 001 L
KMAZN$17.673.9★1,413 rev
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$19.184.2★24 rev
Newest
by launch date
Coume 4 Pcs Halloween Professor Costume Skirt Vest Headband Punk Wig for Movie Cosplay Halloween Women Dress up
Coume$36.243 rev
Maiteenly Halloween Professor Costume Halloween Wizard Wig Suede Vest Headband Glasses Canvas Bag for Nerd Prophecy Teacher Cosplay
Maiteenly$33.327 rev
Disguise Harry Potter Professor Trelawney Deluxe Adult Costume Officially Licensed Halloween Costume Outfit Size (12-14)
Disguise$61.804 rev
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$19.1824 rev
Plus Size Professor Trelawney Costume for Women - Deluxe Harry Potter Dress Skirt Vest Headband & Eyeglasses 1X
Fun Costumes$130.9715 rev
Trending
90-day click momentumPlus Size Professor Trelawney Costume for Women - Deluxe Harry Potter Dress Skirt Vest Headband & Eyeglasses 1X
Fun Costumes$130.974.9★
JOEYOUNG Headwear Bandana Neck Gaiter Head Wrap Headband Balaclava Magic Scarf
JOEYOUNG$12.384.4★
elope Professor Trelawney Headscarf Kit Standard
elope$6.884.8★
Fun Costumes Deluxe Harry Potter Professor Trelawney Costume for Women with Dress Skirt Vest Headband and Eyeglasses Medium
Fun Costumes$124.944.8★
Exotic India Long Printed Dori Skirt from Gujarat with Patch Work - Rayon - Color Beige
Exotic India$27.364.1★
What buyers say about professor trelawney costumes
What buyers praise and complain about, mined from review topics.What buyers love
“Very comfortable”
“It is exactly as described”
“Great fun product,”
“at a more affordable price”
“good material”
“Love the colors”
“High quality”
“The size is perfect”
“Great for running and fitness activities”
“they last :”
What buyers complain about
“I admit to being short”
“Cheap plastic crap”
“not stretchy enough”
“Not true to image”
“Cheaply made”
“No edge stitched into top and bottom”
“not the same color as the image”
“no paisley print either”
“They smelled a bit when they first arrived”
“kind of tight on my hips even though it's the right size”
Top return reasons
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.