Barnacle Boy Costume
FailAn estimated 9.9% of orders come back, so Barnacle Boy Costume is a Fail.
- Flapen Score
- 35 / 100Ranks 14,546 of 16,930 Clothing, Shoes & Jewelry niches · −10 vs the category median of 4535
- Market size
- $41K/yr88K searches / yr
- 90-day growth
- +5.6%search demand this quarter
- Competition
- 82%top-5 click share · 7 brands · 8 sellers
Flapen Score
Barnacle Boy Costume against its category
The dotted line is the Clothing, Shoes & Jewelry average. Past it, Barnacle Boy Costume is stronger. Inside it, weaker.
Market
The Barnacle Boy Costume market on Amazon at a glance
Shoppers on Amazon United States searched for Barnacle Boy Costume 88K times last year and spent an estimated $41K. The top 5 brands take 93% of clicks. Demand peaks in Oct–Nov. Flapen scores it 35 out of 100, a Fail.
01 · Demand
An estimated 1.8% of those searches ended in a purchase.
Shoppers searched for this 88K times in the last 12 months. That counts every search on Amazon United States for this niche's terms. An estimated 1.8% of those searches ended in a purchase. Searches in the last 90 days moved +5.6% against the 90 days before. Searches, conversion and average price together put the market at an estimated $41K a year.
- Searches, last 12 months
- 88K
- Growth, 90 days vs prior 90
- +5.6%
- Conversion, latest week
- 1.8%
- Market size, estimated
- $41Ka year
- Peak month
- October41.5× the quietest month
- Top search term
- barnacle boy costume61K searches a year
02 · Price
A sale here is worth $25.36.
Listings sell for $25.36 on average, from $6.85 to $48.66. Amazon reports units sold in ranges. This niche sold 3K to 4K a year. The average listing sells 0 to 100 of them. At $25.36 that is $0 to $3K a year per listing.
- Average price
- $25.36inside the $15 to $100 sweet spot
- Price range
- $6.85–$48.66
- Amazon United States median price
- $24.38across 115,062 niches
- Units sold a year
- 3K–4K
- Units per listing a year
- 0–100
- Revenue per listing a year
- $0–$3K
- Returns
- 9.9%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. 90% ship with Prime. On an average day, 32.4% of listings are out of stock. The average listing ranks #2,918 within Boys. It carries 56 reviews at 4.21 stars, so a new listing needs social proof before a better product.
- Sponsored listings
- 60%
- Prime listings
- 90%
- Out of stock, average day
- 32.4%
- Average rank
- #2,918in Boys
- Average rating
- 4.21 starsAmazon United States average 4.42 stars
- Average reviews
- 56per listing
- Listings tracked
- 10
04 · Newcomers
Brands here are young.
The brands on the shelf have sold for 34 months on average, so a newcomer is not facing entrenched names.
- Launched, last 12 months
- 0
- Successful launches
- 0Amazon's first-year sales bar
- Average brand age
- 34 months
Products
Top Barnacle Boy 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 10, 2026. The live listing can differ.
Top sellers
by estimated 90-day click share
Matiniy Halloween Cosplay Accessories Set Include Red Long Sleeves White Hat Blue Gloves Scarf Gloves Black Glasses (L)
- Price
- $23.99
- Rating
- 4.2/5
- Reviews
- 16
- Age
- 2y ago

EchoElce 5 PCS Halloween Sailor Costume Accessories Include Sailor Hat Blue Scarf Gloves Socks Eye Mask for Women Men Halloween Party Cosplay
- Price
- $19.41
- Rating
- 3.9/5
- Reviews
- 17
- Age
- 1y ago

Spirit Halloween Adult Spongebob Squarepants Barnacle Boy Costume
- Price
- $48.66
- Rating
- 4.3/5
- Reviews
- 100
- Age
- 6y ago

5 PCS Halloween Sailor Costume Include Sailor Hat Scarf Gloves Socks Glasses for Men Women Cartoon Character Dress Up (Medium) Bluewhite
- Price
- $18.68
- Rating
- 4.4/5
- Reviews
- 78
- Age
- 2y ago

Bgfhna 5 PCS Halloween Sailor Costume Sailor Hat Scarf Gloves Blue Athletic Compression Socks Glasses for Men Women Dress Up
- Price
- $15.68
- Rating
- 4.5/5
- Reviews
- 4
- Age
- 1y ago
Trending
estimated 90-day click momentum
Matiniy Halloween Cosplay Accessories Set Include Red Long Sleeves White Hat Blue Gloves Scarf Gloves Black Glasses (L)
- Price
- $23.99
- Rating
- 4.2/5
- Reviews
- 16
- Age
- 2y ago

Aniler Unisex 18 Elbow Length Full Finger Costume Party Stretchy Gloves (One Size Navy Blue)
- Price
- $9.69
- Rating
- 4.4/5
- Reviews
- 238
- Age
- 4y ago

JQAKFIY Barnacle Boy Costume Mermaid Men Costumes Adult Halloween Character Cosplay Outfit Set with Hat Gloves Scarf Prop M
- Price
- $45.93
- Rating
- 4.1/5
- Reviews
- 6
- Age
- 1y ago

JQAKFIY Barnacle Boy Costume Mermaid Men Costumes Adult Halloween Character Cosplay Outfit Set with Hat Gloves Scarf Prop XL
- Price
- $46.04
- Rating
- 4.1/5
- Reviews
- 6
- Age
- 1y ago

Matiniy 5 PCS Halloween Sailor Costume Include Sailor Hat Scarf Gloves Socks Glasses for Men Women Cartoon Character Dress Up (Large)
- Price
- $18.67
- Rating
- 4.4/5
- Reviews
- 78
- Age
- 2y ago
Newest
by launch date
Bgfhna 5 PCS Halloween Sailor Costume Sailor Hat Scarf Gloves Blue Athletic Compression Socks Glasses for Men Women Dress Up
- Price
- $15.68
- Rating
- 4.5/5
- Reviews
- 4
- Age
- 1y ago

JQAKFIY Barnacle Boy Costume Mermaid Men Costumes Adult Halloween Character Cosplay Outfit Set with Hat Gloves Scarf Prop M
- Price
- $45.93
- Rating
- 4.1/5
- Reviews
- 6
- Age
- 1y ago

JQAKFIY Barnacle Boy Costume Mermaid Men Costumes Adult Halloween Character Cosplay Outfit Set with Hat Gloves Scarf Prop XL
- Price
- $46.04
- Rating
- 4.1/5
- Reviews
- 6
- Age
- 1y ago

EchoElce 5 PCS Halloween Sailor Costume Accessories Include Sailor Hat Blue Scarf Gloves Socks Eye Mask for Women Men Halloween Party Cosplay
- Price
- $19.41
- Rating
- 3.9/5
- Reviews
- 17
- Age
- 1y ago

Matiniy Halloween Cosplay Accessories Set Include Red Long Sleeves White Hat Blue Gloves Scarf Gloves Black Glasses (L)
- Price
- $23.99
- Rating
- 4.2/5
- Reviews
- 16
- Age
- 2y ago
Competition
Competition: brands, sellers & click share
The top 5 products take an estimated 82% of clicks. A locked shelf that new listings rarely crack.
Brands
7 falling
Sellers
8
Est. top-5 brand share
93%
Top 20: 100%
Est. top-5 click share
82%
Top 20: 100%
Open market
3%
- Matiniy61%
- EchoElce11%
- Spirit Halloween8%
- JQAKFIY7%
- Bgfhna5%
- Aniler4%
- Open — no brand owns it (1 brand, 3%)
Demand
Barnacle Boy Costume search demand
Weekly searches over the year, seasonality beneath. Pick a range.
Peak months: Oct, Nov · busiest ÷ quietest = 41.5×
Search terms
Top Barnacle Boy Costume search terms shoppers use
The exact words shoppers type, with estimated yearly volume, growth, and conversion.
- barnacle boy costume61K/yr
- barnacle boy7K/yr
- barnacle boy costume women13K/yr
- barnacle boy costume men8K/yr
Reviews and returns
What reviews say buyers love and hate about Barnacle Boy Costume
We read the reviews and the return reasons for every product selling here.
“Definitely runs tight”
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.
11 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 Barnacle Boy 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









