rosalina costume
Worth a lookShows a thin review moat (85 avg reviews), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Review moat
Incredible84.92avg incumbent reviews — the moat a new listing must climb
Avg price
Incredible$33.41avg listing price — sweet spot $15–$100
Price range
Great$13.12–$57.95cheapest to priciest tracked listing — scored on the share inside $15–$100
Growth
Great+86.2%90-day search growth — must beat 0% to launch
Quality gap
Good4.4★avg incumbent rating — lower means beatable quality
Competition
Good52%top-5 click share — leaders hold, buyers still browse
Brand share
Good73%top-5 brand share — brands hold most of the demand
Returns
Okay4.0%return rate — above 5% kills the launch gate
Market size
Okay$101K$101K/yr · 393K searches
Conversion
Bad0.8%search→purchase rate — share of searches ending in a sale
According to Flapen's Amazon United States niche tracking, rosalina costume is a $101K/yr Amazon United States market (393K searches/yr). The top 5 brands hold 73% of demand. Demand peaks in Apr–Sep–Oct. Verdict: Worth a look — 56/100.
Data updated Jul 10, 2026 · scored weekly · How we score niches
rosalina costume market data
- Units sold / yr
- 3K–3K
- avg 0–100/product
- Revenue / yr
- $84K–$100K
- units × avg price
- Conversion rate
- 0.8%
- Avg BSR
- #8,127
- Page quality
- 0%
- Prime
- 81%
- Sponsored
- 77%
- Out of stock
- 14.8%
- Avg brand age
- 34 months
- Avg seller age
- 164 days
Competition & brand share
The top 5 products take 52% of clicks — established leaders, but buyers still shop beyond them.Brands
17 falling
Sellers
36
Top-5 brand share
73%
Top 20: 100%
Top-5 click share
52%
Top 20: 91%
Open market
22%
- The Super Mario Galaxy Movie34%
- Szytypyl12%
- Binbo11%
- Mukola9%
- Anjite7%
- ZIW5%
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — +86.2% search growth over the last 90 days.Peak months: Apr, Sep, Oct · busiest ÷ quietest = 17.3×
Top rosalina costume search terms
- rosalina costume kids82K/yr
- rosalina costume121K/yr
- princess rosalina costume35K/yr
- rosalina dress24K/yr
- rosalina cosplay36K/yr
- princess rosalina dress7K/yr
- rosalina costume adult46K/yr
- princess rosalina costume kids10K/yr
- rosalina costume girls5K/yr
- rosalina costume women7K/yr
Top rosalina costume 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 24 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
Binbo Princess Rosalian Costume Dress kids Grils Halloween Cosplay Birthday Party Outfit 5-6Y
Binbo$35.434.8★26 rev
Szytypyl Princess Rosalina Costume for Girls One Shoulder Fancy Dress Gowns with Accessories Green
Szytypyl$39.604.9★27 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
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
Binbo Grils Princess Rosalian Costume Dress kids Halloween Cosplay Birthday Party Outfit 11-12Y
Binbo$38.073 rev
Trending
90-day click momentumAnjite Girls Galaxy Princess Rosalina Costume Kids Royal Dress Up with Teal Maxi Dress Wig Crown Wand Earrings for Halloween AJ097L
Anjite$40.664.7★
IDOTTA Girls Princess Costume for Kids Cosplay Fancy Dress up with Crown Magic Wand
IDOTTA$26.992.0★
CPHDXU Princess Costume Dress for Girls Birthday Halloween Cosplay Dress Up With Crown Earrings Brooch Star Stick Accessories (11Years-12Years)
CPHDXU$34.295.0★
Szytypyl Princess Rosalina Costume for Girls One Shoulder Fancy Dress Gowns with Accessories Green
Szytypyl$39.604.9★
Girls Princess Rosalina Costume Dress with Accessories Blue Princess Dress with Wig Wand Crown Earrings and Star Earrings AJ081M
Anjite$36.964.0★
What buyers say about rosalina costume
What buyers praise and complain about, mined from review topics.What buyers love
“Shirt is of decent quality”
“It fits perfect”
“Durable material and very reliable”
“Durable material and very reliable”
“Well worth the money”
“The dress is silky soft. it's wrinkled in the photo”
“It is easy to put on”
“Print quality / design - see photos”
“I love how they designed this”
What buyers complain about
“But my grand daughter was so sad that it didnt fit”
“gets glitter everywhere”
“Inaccurate picture”
“Size up, this shirt must have been somebody else return, the tag inside is faded”
“gems fell off easy”
“Waste of time and money”
“Very bad quality”
Top return reasons
Common questions
- Is rosalina costume profitable to sell on Amazon United States?
- The niche generates $101K/yr across 26 tracked products. 7 of 18 products launched in the last 360 days are still selling. 90-day search growth is +86.2%. Flapen's verdict: Worth a look (56/100).
- How competitive is the rosalina costume niche?
- 17 brands and 36 sellers compete. The top 5 products take 52% of clicks and top 5 brands hold 73% of demand.
- What do buyers complain about in rosalina costume?
- Top complaints mined from reviews: Size-Overall, Brightness/Shine/Glow, Advertised Vs Actual Product. The return rate is 4.0%.
- When does demand for rosalina costume peak?
- Demand peaks in Apr–Sep–Oct; the busiest month runs 17.3× the quietest.
- What does it cost to enter the rosalina costume niche?
- Listings span $13.12–$57.95; the average listing price is $33.41 (sweet spot $15–$100). The average incumbent carries 85 reviews — the moat a new listing must climb.