rosalina costume kids
Worth a lookShows demand growing +240.9% this quarter, but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Growth
Incredible+240.9%90-day search growth — must beat 0% to launch
Review moat
Incredible64.33avg incumbent reviews — the moat a new listing must climb
Avg price
Incredible$33.49avg listing price — sweet spot $15–$100
Price range
Incredible$24.01–$40.66cheapest to priciest tracked listing — scored on the share inside $15–$100
Returns
Great1.9%return rate — above 5% kills the launch gate
Quality gap
Good4.4★avg incumbent rating — lower means beatable quality
Brand share
Okay77%top-5 brand share — brands hold most of the demand
Competition
Okay62%top-5 click share — leaders hold, buyers still browse
Conversion
Bad1.3%search→purchase rate — share of searches ending in a sale
Market size
Bad$41K$41K/yr · 96K searches
According to Flapen's Amazon United States niche tracking, rosalina costume kids is a $41K/yr Amazon United States market (96K searches/yr). The top 5 brands hold 77% of demand. Demand peaks in Apr–May–Sep–Oct. Verdict: Worth a look — 57/100.
Data updated Jul 10, 2026 · scored weekly · How we score niches
rosalina costume kids market data
- Units sold / yr
- 1K–1K
- avg 0–100/product
- Revenue / yr
- $33K–$42K
- units × avg price
- Conversion rate
- 1.3%
- Avg BSR
- #768
- Page quality
- 0%
- Prime
- 72%
- Sponsored
- 89%
- Out of stock
- 22.2%
- Avg brand age
- 31 months
- Avg seller age
- 167 days
Competition & brand share
The top 5 products take 62% of clicks — established leaders, but buyers still shop beyond them.Brands
13 rising
Sellers
24
Top-5 brand share
77%
Top 20: 100%
Top-5 click share
62%
Top 20: 100%
Open market
18%
- The Super Mario Galaxy Movie34%
- Szytypyl15%
- Binbo12%
- Anjite9%
- Mukola8%
- ZIW6%
- Open — no brand owns it (7 brands, 18%)
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — +240.9% search growth over the last 90 days.Peak months: Apr, May, Sep, Oct · busiest ÷ quietest = 17.9×
Top rosalina costume kids search terms
- rosalina costume kids82K/yr
- princess rosalina costume kids10K/yr
- rosalina costume girls5K/yr
Top rosalina 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 18 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
The Super Mario Galaxy Movie Girls Fantasy Gown Nightgown ROSALINA FANTASY GOWN 3T
The Super Mario Galaxy Movie$24.014.9★34 rev
Szytypyl Princess Rosalina Costume for Girls One Shoulder Fancy Dress Gowns with Accessories Green
Szytypyl$39.604.9★27 rev
Binbo Princess Rosalian Costume Dress kids Grils Halloween Cosplay Birthday Party Outfit 5-6Y
Binbo$35.434.8★26 rev
Mukola Kids Princess Costume Girls Galaxy Movie Off Shoulder Fancy Dress with Crown Wand Accessories Cosplay Party
Mukola$35.293.9★15 rev
ZIW Princess Rosalina Costume Kids Girls Blue Dress with Wig Wand Crown Earrings Plush Galaxy Princess Outfit for Halloween Party Dress Up ZW264L
ZIW$39.694.5★14 rev
Newest
by launch date
Anjite Girls Galaxy Princess Rosalina Costume Kids Royal Dress Up with Teal Maxi Dress Wig Crown Wand Earrings for Halloween AJ097L
Anjite$40.668 rev
Girls Princess Rosalina Costume Dress with Accessories Blue Princess Dress with Wig Wand Crown Earrings and Star Earrings AJ081M
Anjite$36.963 rev
ZENGOR CENDA Halloween Costume For Girls Toddler Galaxy Princess Dress Up With Accessories Birthday Party Outfits
ZENGOR CENDA$33.8322 rev
Szytypyl Princess Rosalina Costume for Girls One Shoulder Fancy Dress Gowns with Accessories Green
Szytypyl$39.6027 rev
Szytypyl Princess Rosalina Costume for Girls One Shoulder Fancy Dress Gowns with Accessories Green
Szytypyl$38.9427 rev
Trending
90-day click momentumMukola Kids Princess Costume Girls Galaxy Movie Off Shoulder Fancy Dress with Crown Wand Accessories Cosplay Party
Mukola$35.383.9★
ABHOH Princess Rosalina Costume Kids Girls Star Galaxy Dress with Accessories Celestial Outfit Wand Crown Earrings Plush Set for Birthday Halloween Dress Up AB026L
ABHOH$34.134.2★
IDOTTA Girls Princess Costume for Kids Cosplay Fancy Dress up with Crown Magic Wand
IDOTTA$26.992.0★
ZENGOR CENDA Halloween Costume For Girls Toddler Galaxy Princess Dress Up With Accessories Birthday Party Outfits
ZENGOR CENDA$33.834.4★
Anjite Girls Galaxy Princess Rosalina Costume Kids Royal Dress Up with Teal Maxi Dress Wig Crown Wand Earrings for Halloween AJ097L
Anjite$40.664.7★
What buyers say about rosalina costume kids
What buyers praise and complain about, mined from review topics.What buyers love
“AMAZING QUALITY”
“My daughter told me the size for the age was very accurate she also remarked about the quality of the costume was very good for the price”
“Durable material and very reliable”
“Overall I thought the costume was well priced”
“The fabric feels nicer than many children's costumes, and the stitching and overall construction seem durable enough to hold up to repeated dress-up sessions”
“Silky Dress”
“The color is great”
“help complete the look”
“Includes fun accessories”
“It is easy to put on”
What buyers complain about
“I did get it a little too big because kids grow fast”
“gets glitter everywhere”
“Inaccurate picture”
“gems fell off easy”
“Waste of time and money”
“- Material is not stretchy”
“Very bad quality”
“Flimsy”
Top return reasons
Common questions
- Is rosalina costume kids profitable to sell on Amazon United States?
- The niche generates $41K/yr across 18 tracked products. 7 of 16 products launched in the last 360 days are still selling. 90-day search growth is +240.9%. Flapen's verdict: Worth a look (57/100).
- How competitive is the rosalina costume kids niche?
- 13 brands and 24 sellers compete. The top 5 products take 62% of clicks and top 5 brands hold 77% of demand.
- What do buyers complain about in rosalina costume kids?
- Top complaints mined from reviews: Size-Overall, Brightness/Shine/Glow, Advertised Vs Actual Product. The return rate is 1.9%.
- When does demand for rosalina costume kids peak?
- Demand peaks in Apr–May–Sep–Oct; the busiest month runs 17.9× the quietest.
- What does it cost to enter the rosalina costume kids niche?
- Listings span $24.01–$40.66; the average listing price is $33.49 (sweet spot $15–$100). The average incumbent carries 64 reviews — the moat a new listing must climb.