spider costume
Skip itWeak search conversion (0.7%) — this niche doesn't clear our bar today.
Avg price
Incredible$25.44avg listing price — sweet spot $15–$100
Price range
Great$11.03–$61.19cheapest to priciest tracked listing — scored on the share inside $15–$100
Review moat
Great387.03avg incumbent reviews — the moat a new listing must climb
Brand share
Great59%top-5 brand share — no brand owns this niche
Quality gap
Good4.4★avg incumbent rating — lower means beatable quality
Competition
Good47%top-5 click share — leaders hold, buyers still browse
Growth
Okay+0.6%90-day search growth — must beat 0% to launch
Market size
Bad$97K$97K/yr · 560K searches
Returns
Bad9.0%return rate — above 6% kills the launch gate
Conversion
Bad0.7%search→purchase rate — share of searches ending in a sale
Competition
The top 5 products take 47% of clicks — established leaders, but buyers still shop beyond them.Brands
24 rising
Sellers
40
Top-5 brand share
59%
Open market
36%
- NEWCOSPLAY21%
- catnee11%
- Marvel10%
- Leg Avenue9%
- KIMI HOUSE8%
- Morph5%
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 33 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
NEWCOSPLAY Unisex Adult Spider Onesie Pajamas Animal One Piece Halloween Costume Cosplay Sleepwear (Spider Small)
NEWCOSPLAY$25.124.5★349 rev
Halloween Spider Costume Party Decorations-Halloween Candy Spider Props with Straps for Kids Giant HalloweenSpider Decorations Outdoor Indoor Realistic Spider Costume for Yard Haunted House Web Decor
catnee$14.114.4★392 rev
Marvel Unisex Child Kids 2-piece Snug-fit Cotton Pajama Set Spider Costume 6 US
Marvel$13.734.7★3,269 rev
Leg Avenue Womens Sheer Spiderweb Arm Warmers Black O/S
Leg Avenue$11.034.6★1,500 rev
KIMI HOUSE Spider Costume for Kids Perfect for Halloween Animal Dress up Party Black(M/5-7Y)
KIMI HOUSE$29.734.5★657 rev
Newest
by launch dateMarvel Unisex Child Kids 2-piece Snug-fit Cotton Pajama Set Spider Costume 6 US
Marvel$13.733,269 rev
Get Trend Marvel Ghost Spider 2 Pc Pajama Set for Boys Girls 3-8 Years Long Sleeve T Shirt and PJ Pants Gifts for Kids (3-4 Years Multi Ghost Spider)
Get Trend$27.6382 rev
FINASKASU Halloween Spider Web Costume Set 8 Pieces Black Lace Cape Stockings Mask Gloves Headband Necklet Tattoo sticker (Spider Poncho)
FINASKASU$27.0712 rev
Baby Spider Costume Infant Animal Onesie Toddler Cosplay Boy Girl 45T
HSCTEK$31.0152 rev
Baby Spider Costume Infant Animal Onesie Toddler Cosplay Boy Girl 36
HSCTEK$31.7352 rev
Trending
90-day click momentumGet Trend Marvel Ghost Spider 2 Pc Pajama Set for Boys Girls 3-8 Years Long Sleeve T Shirt and PJ Pants Gifts for Kids (3-4 Years Multi Ghost Spider)
Get Trend$27.634.7★
Marvel Avengers Spider-Man Toddler Boys Cosplay Romper Spiderman 3T
Marvel$21.304.8★
Ruikajia Girls Bat Spider Web Tulle Tutu Ruffle Princess Dress 4 Years Pink
Ruikajia$18.434.2★
Geyoga 2 Pairs Spider Web Gloves Halloween Spider Red and Black Gloves for Fathers Day Masquerade Homecoming Cosplay Gifts(Child)
Geyoga$12.324.3★
NEWCOSPLAY Unisex Adult Spider Onesie Pajamas Animal One Piece Halloween Costume Cosplay Sleepwear (Spider Small)
NEWCOSPLAY$25.124.5★
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — +0.6% search growth over the last 90 days.Peak months: Sep, Oct, Nov · busiest ÷ quietest = 76.9×
Reviews
What buyers praise and complain about, mined from review topics.What buyers love
“Good set fits and looks good”
“Comfortable”
“Good quality”
“Its cheap”
“Amazing quality & bright colors”
“all the seams seem to be holding up quite well”
“Looks good on arms”
“Exactly what I was looking for”
“The style is good”
“print has held up after multiple washes”
What buyers complain about
“These run really big”
“Tore 2nd wear”
“Extremely disappointed that I was charged $44.00 for this item”
“Very cheap and poorly made”
“Item received was clearly used before”
“The gloves began ripping at the seams after only a few uses”
“Item came completely broken into multiple parts”
“It's a darker maroon than pictured”
“Poorly made”
“Not as stretchy as I expected”