a league of their own costume kids
Skip itBrand-locked demand (top 5 brands take 100% of clicks) — this niche doesn't clear our bar today.
Avg price
Incredible$30.75avg listing price — sweet spot $15–$100
Review moat
Great176.15avg incumbent reviews — the moat a new listing must climb
Price range
Great$13.72–$39.84cheapest to priciest tracked listing — scored on the share inside $15–$100
Growth
Good+28.1%90-day search growth — must beat 0% to launch
Competition
Okay63%top-5 click share — leaders hold, buyers still browse
Quality gap
Okay4.6★avg incumbent rating — lower means beatable quality
Conversion
Bad1.0%search→purchase rate — share of searches ending in a sale
Market size
Bad$9K$9K/yr · 29K searches
Brand share
Bad100%top-5 brand share — brand-locked demand
Returns
Bad17.7%return rate — above 5% kills the launch gate
According to Flapen's Amazon United States niche tracking, a league of their own costume kids is a $9K/yr Amazon United States market (29K searches/yr). The top 5 brands hold 100% of demand. Demand peaks in Sep–Oct. Verdict: Skip it — 32/100.
Data updated Jul 10, 2026 · scored weekly · How we score niches
a league of their own costume kids market data
- Units sold / yr
- 250–500
- avg 0–100/product
- Revenue / yr
- $8K–$15K
- units × avg price
- Conversion rate
- 1.0%
- Avg BSR
- #2,483
- Page quality
- 0%
- Prime
- 62%
- Sponsored
- 54%
- Out of stock
- 30.5%
- Avg brand age
- 40 months
- Avg seller age
- 225 days
Competition & brand share
The top 5 products take 63% of clicks — established leaders, but buyers still shop beyond them.Brands
5 flat
Sellers
6
Top-5 brand share
100%
Top 20: 100%
Top-5 click share
63%
Top 20: 100%
Open market
0%
- Morph42%
- Snirczs30%
- Fun Costumes16%
- Spirit Halloween7%
- Okbebe4%
Demand & seasonality
Weekly Amazon search volume, last 84 weeks — +28.1% search growth over the last 90 days.Peak months: Sep, Oct · busiest ÷ quietest = 109.4×
Top a league of their own costume kids search terms
- league of their own costume kids11K/yr
- a league of their own costume kids12K/yr
- a league of their own costume girls2K/yr
- rockford peaches costume kids3K/yr
Top a league of their own costume kids 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
Snirczs Kids Baseball Costume Dress with Hat and Accessories Sporty Uniform Outfit for Girls Halloween (S)
Snirczs$29.784.9★23 rev
Morph - Pink Baseball Costume For Kids Baseball Player Costume Softball Halloween Costumes For Girls Movie Character Halloween Costumes For Girls And Toddler 7-9 Years
Morph$32.214.5★106 rev
Snirczs Kids Baseball Costume Dress with Hat and Accessories Sporty Uniform Outfit for Girls Halloween (XS)
Snirczs$29.674.9★23 rev
Morph - Pink Baseball Costume For Kids Baseball Player Costume Softball Halloween Costumes For Girls Movie Character Halloween Costumes For Girls And Toddler 10-12 Years
Morph$31.954.5★106 rev
Spirit Halloween A League of Their Own Kids Dottie Costume | Officially Licensed | Dottie Dress
Spirit Halloween$39.364.3★7 rev
Newest
by launch date
Okbebe Kids Baseball Player Costume Halloween Cosplay Movie Character Baseball Uniform Costumes For Girls (Pink 7-9Y)
Okbebe$25.0113 rev
Snirczs Kids Baseball Costume Dress with Hat and Accessories Sporty Uniform Outfit for Girls Halloween (S)
Snirczs$29.7823 rev
Snirczs Kids Baseball Costume Dress with Hat and Accessories Sporty Uniform Outfit for Girls Halloween (XS)
Snirczs$29.6723 rev
Spirit Halloween A League of Their Own Kids Dottie Costume | Officially Licensed | Dottie Dress
Spirit Halloween$39.367 rev
Fun Costumes Kids A League of Their Own Baseball Cap | Official Child Rockford Peaches Baseball Hat for Boys & Girls ST Red
Fun Costumes$13.726 rev
Trending
90-day click momentumFun Costumes Kids A League of Their Own Baseball Cap | Official Child Rockford Peaches Baseball Hat for Boys & Girls ST Red
Fun Costumes$13.725.0★
Okbebe Kids Baseball Player Costume Halloween Cosplay Movie Character Baseball Uniform Costumes For Girls (Pink 7-9Y)
Okbebe$25.014.4★
Morph - Pink Baseball Costume For Kids Baseball Player Costume Softball Halloween Costumes For Girls Movie Character Halloween Costumes For Girls And Toddler 3-4 Years
Morph$31.174.5★
Snirczs Kids Baseball Costume Dress with Hat and Accessories Sporty Uniform Outfit for Girls Halloween (XS)
Snirczs$29.674.9★
Spirit Halloween A League of Their Own Kids Dottie Costume | Officially Licensed | Dottie Dress
Spirit Halloween$39.364.3★
What buyers say about a league of their own costume kids
What buyers praise and complain about, mined from review topics.What buyers love
“Fit was good”
“actually well made”
“Cute design and looks great in pictures,”
What buyers complain about
“Bat only lasted a few days”
“The material feels a bit thin”
“the fit isnt perfect”
“the quality could be better”
Top return reasons
Common questions
- Is a league of their own costume kids profitable to sell on Amazon United States?
- The niche generates $9K/yr across 13 tracked products. 90-day search growth is +28.1%. Flapen's verdict: Skip it (32/100).
- How competitive is the a league of their own costume kids niche?
- 5 brands and 6 sellers compete. The top 5 products take 63% of clicks and top 5 brands hold 100% of demand.
- What do buyers complain about in a league of their own costume kids?
- Top complaints mined from reviews: Durability, Thin, Size-Overall. The return rate is 17.7% — above our launch gate.
- When does demand for a league of their own costume kids peak?
- Demand peaks in Sep–Oct; the busiest month runs 109.4× the quietest.
- What does it cost to enter the a league of their own costume kids niche?
- Listings span $13.72–$39.84; the average listing price is $30.75 (sweet spot $15–$100). The average incumbent carries 176 reviews — the moat a new listing must climb.