Hollow Knight Costume
FailBuyers convert on only 0.3% of searches, so Hollow Knight Costume is a Fail.
- Flapen Score
- 36 / 100Ranks 14,149 of 16,930 Clothing, Shoes & Jewelry niches · −9 vs the category median of 4536
- Market size
- $34K/yr318K searches / yr
- 90-day growth
- -23.2%search demand this quarter
- Competition
- 59%top-5 click share · 13 brands · 15 sellers
Flapen Score
Hollow Knight Costume against its category
The dotted line is the Clothing, Shoes & Jewelry average. Past it, Hollow Knight Costume is stronger. Inside it, weaker.
Market
The Hollow Knight Costume market on Amazon at a glance
Shoppers on Amazon United States searched for Hollow Knight Costume 318K times last year and spent an estimated $34K. The top 5 brands take 82% of clicks. Demand peaks in Sep–Oct–Nov. Flapen scores it 36 out of 100, a Fail.
01 · Demand
An estimated 0.3% of those searches ended in a purchase.
Shoppers searched for this 318K times in the last 12 months. That counts every search on Amazon United States for this niche's terms. An estimated 0.3% of those searches ended in a purchase. Searches in the last 90 days moved -23.2% against the 90 days before. Searches, conversion and average price together put the market at an estimated $34K a year.
- Searches, last 12 months
- 318K
- Growth, 90 days vs prior 90
- -23.2%
- Conversion, latest week
- 0.3%
- Market size, estimated
- $34Ka year
- Peak month
- October81.9× the quietest month
- Top search term
- hollow knight costume150K searches a year
02 · Price
A sale here is worth $36.03.
Listings sell for $36.03 on average, from $12.65 to $144.49. Amazon reports units sold in ranges. This niche sold 5K to 6K a year. The average listing sells 250 to 500 of them. At $36.03 that is $9K to $18K a year per listing.
- Average price
- $36.03inside the $15 to $100 sweet spot
- Price range
- $12.65–$144.49
- Amazon United States median price
- $24.38across 115,062 niches
- Units sold a year
- 5K–6K
- Units per listing a year
- 250–500
- Revenue per listing a year
- $9K–$18K
- Returns
- 3.2%of orders · Amazon United States median 2.1%
03 · Entry bar
The bar here is low.
60% of listings pay for placement with sponsored ads. 80% ship with Prime. On an average day, 25.8% of listings are out of stock. The average listing ranks #1,933 within Masks. It carries 68 reviews at 4.45 stars, so a new listing needs social proof before a better product.
- Sponsored listings
- 60%
- Prime listings
- 80%
- Out of stock, average day
- 25.8%
- Average rank
- #1,933in Masks
- Average rating
- 4.45 starsAmazon United States average 4.42 stars
- Average reviews
- 68per listing
- Listings tracked
- 20
04 · Newcomers
0 of last year's 8 launches cleared the first-year sales bar.
8 products launched here in the last 12 months. 0 of them cleared the first-year sales bar, our mark for a successful launch. The brands on the shelf have sold for 40 months on average, so the names here are settling in.
- Launched, last 12 months
- 8
- Successful launches
- 0Amazon's first-year sales bar
- Average brand age
- 40 months
Products
Top Hollow Knight Costume products & what they sell for
The products selling here, as shoppers see them on Amazon. Shelf share and sales are our estimates.
Prices and ratings read from Amazon on Jul 17, 2026. The live listing can differ.
Top sellers
by estimated 90-day click share
Lanmachoice White Knight Mask with Round Horns Cosplay Costume pvc Mask for Halloween & Game-Inspired Looks
- Price
- $24.32
- Rating
- 4.8/5
- Reviews
- 230
- Age
- 1y ago

Colorful House Adult Renaissance Cloak Gothic Witch Cape with Hooded Medieval Halloween Capes(Blue 39)
- Price
- $18.02
- Rating
- 4.5/5
- Reviews
- 195
- Age
- 3y ago

NDJLNZ Knight Mask Funny Halloween Cosplay Costume Accessories Game Party Character Mask Full Head Latex
- Price
- $32.14
- Rating
- 4.4/5
- Reviews
- 46
- Age
- 2y ago

Lanmachoice 3 PCS Knight Mask with Prop Sword and Black Cloak Halloween Costume Cosplay Outfit Set for Adults Costume Accessory for Party Dress Up
- Price
- $26.36
- Rating
- 5.0/5
- Reviews
- 1
- Age
- 3mo ago

C-ZOFEK Adventure Game Hooded Cape Cloak Gothic Cosplay Costume (Navy Blue)
- Price
- $45.66
- Rating
- 4.7/5
- Reviews
- 13
- Age
- 2y ago
Trending
estimated 90-day click momentum
miccostumes Womens Costume Knight Cosplay Cape with Mask (red l/xl)
- Price
- $59.70
- Rating
- 5.0/5
- Reviews
- 1
- Age
- 4mo ago

Lanmachoice 3 PCS Knight Mask with Prop Sword and Black Cloak Halloween Costume Cosplay Outfit Set for Adults Costume Accessory for Party Dress Up
- Price
- $26.36
- Rating
- 5.0/5
- Reviews
- 1
- Age
- 3mo ago

Lanmachoice 3 PCS Knight Mask with Needle Prop Sword and Red Satin Cloak Halloween Costume Cosplay Outfit Set for Adults Costume Accessory for Party Dress Up Hornets Style
- Price
- $24.65
- Rating
- 3.0/5
- Reviews
- 1
- Age
- 3mo ago

JEMITOP Mens Retro Renaissance Costume Lace Up Sleeveless Shirts for Pirate Medieval Viking Halloween Cosplay Black L
- Price
- $19.12
- Rating
- 4.6/5
- Reviews
- 364
- Age
- 1y ago

20.8 Knight Sword Cosplay Halloween Costume Accessory for Party Stage Performance Photo Prop Silver
- Price
- $12.65
- Rating
- 4.5/5
- Reviews
- 25
- Age
- 6mo ago
Newest
by launch date
Lanmachoice 3 PCS Knight Mask with Prop Sword and Black Cloak Halloween Costume Cosplay Outfit Set for Adults Costume Accessory for Party Dress Up
- Price
- $26.36
- Rating
- 5.0/5
- Reviews
- 1
- Age
- 3mo ago

Lanmachoice 3 PCS Knight Mask with Needle Prop Sword and Red Satin Cloak Halloween Costume Cosplay Outfit Set for Adults Costume Accessory for Party Dress Up Hornets Style
- Price
- $24.65
- Rating
- 3.0/5
- Reviews
- 1
- Age
- 3mo ago

miccostumes Womens Costume Knight Cosplay Cape with Mask (red l/xl)
- Price
- $59.70
- Rating
- 5.0/5
- Reviews
- 1
- Age
- 4mo ago

20.8 Knight Sword Cosplay Halloween Costume Accessory for Party Stage Performance Photo Prop Silver
- Price
- $12.65
- Rating
- 4.5/5
- Reviews
- 25
- Age
- 6mo ago

CoserWorld Knight Sword for Halloween Cosplay Costume Accessories LARP Props Silver
- Price
- $19.31
- Rating
- 4.3/5
- Reviews
- 11
- Age
- 7mo ago
Competition
Competition: brands, sellers & click share
The top 5 products take an estimated 59% of clicks. Leaders hold, but buyers still shop past them.
Brands
13 rising
Sellers
15
Est. top-5 brand share
82%
Top 20: 100%
Est. top-5 click share
59%
Top 20: 100%
Open market
14%
- Lanmachoice38%
- Colorful House15%
- C-ZOFEK14%
- NDJLNZ11%
- Generic5%
- UQJE4%
- Open — no brand owns it (7 brands, 14%)
Demand
Hollow Knight Costume search demand
Weekly searches over the year, seasonality beneath. Pick a range.
Peak months: Sep, Oct, Nov · busiest ÷ quietest = 81.9×
Search terms
Top Hollow Knight Costume search terms shoppers use
The exact words shoppers type, with estimated yearly volume, growth, and conversion.
- hollow knight costume150K/yr
- hollow knight mask75K/yr
- hollow knight cosplay24K/yr
- hollow knight hollow knight halloween cosplay costume43K/yr
- hollow knight helmet7K/yr
- hollow knight costume kids11K/yr
- hollow knight costumes3K/yr
- hollow knight halloween costume5K/yr
Reviews and returns
What reviews say buyers love and hate about Hollow Knight Costume
We read the reviews and the return reasons for every product selling here.
“Large”
Every topic
Every topic buyers talk about, one row each.
Red shows the share of negative reviews and green the share of positive reviews, biggest topic first. Open a row to read what they wrote.
22 topics
Keep looking
Related niches
Niches in the same category that score near this one. Research these next.
Best Flapen score
The highest-scoring niches we track right now, across every category.
FAQ
Common Hollow Knight Costume questions
Answered from the same tracked data.
Figures on this page are estimates modeled from public Amazon pages and third-party keyword data. Amazon does not supply them, and no connected seller's data is used. How we handle Amazon data









