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
Returns
Okay5.3%return rate — above 6% kills the launch gate
Competition
Bad72%top-5 click share — a locked-up shelf
Growth
Bad-9.0%90-day search growth — must beat 0% to launch
Market size
Bad$30K$30K/yr · 24K searches
Competition
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%
Open market
20%
- Disguise28%
- elope20%
- Iconikal9%
- Fun Costumes8%
- KMAZN8%
- Tigeen7%
Product shelf
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★
Demand
Weekly Amazon search volume, last 36 weeks — -9.0% search growth over the last 90 days.Reviews
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”