sailor moon birthday decorations
Skip itA small market ($26K/yr) — this niche doesn't clear our bar today.
Review moat
Great368.22avg incumbent reviews — the moat a new listing must climb
Price range
Great$6.38–$49.99cheapest to priciest tracked listing — scored on the share inside $15–$100
Avg price
Good$13.59avg listing price — sweet spot $15–$100
Quality gap
Good4.4★avg incumbent rating — lower means beatable quality
Brand share
Good73%top-5 brand share — brands hold most of the demand
Returns
Okay3.6%return rate — above 5% kills the launch gate
Conversion
Okay3.0%search→purchase rate — share of searches ending in a sale
Growth
Bad-1.8%90-day search growth — must beat 0% to launch
Competition
Bad72%top-5 click share — a locked-up shelf
Market size
Bad$26K$26K/yr · 63K searches
According to Flapen's Amazon United States niche tracking, sailor moon birthday decorations is a $26K/yr Amazon United States market (63K searches/yr). The top 5 brands hold 73% of demand. Demand peaks in Aug. Verdict: Skip it — 38/100.
Data updated Jul 23, 2026 · scored weekly · How we score niches
sailor moon birthday decorations market data
- Units sold / yr
- 1K–2K
- avg 0–100/product
- Revenue / yr
- $17K–$20K
- units × avg price
- Conversion rate
- 3.0%
- Avg BSR
- #7,307
- Page quality
- 0%
- Prime
- 83%
- Sponsored
- 61%
- Out of stock
- 2.9%
- Avg brand age
- 37 months
- Avg seller age
- 177 days
Competition & brand share
The top 5 products capture 72% of clicks — a locked-up shelf that new listings rarely crack.Brands
16 falling
Sellers
22
Top-5 brand share
73%
Top 20: 100%
Top-5 click share
72%
Top 20: 100%
Open market
21%
- Sacuoskdyu24%
- Generic23%
- POSLIUE10%
- SHOWSUP9%
- TTSAM6%
- Pink Blume6%
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — -1.8% search growth over the last 90 days.Peak months: Aug · busiest ÷ quietest = 2.2×
Top sailor moon birthday decorations search terms
- sailor moon birthday decorations22K/yr
- sailor moon party decorations10K/yr
- sailor moon birthday7K/yr
- sailor moon decorations5K/yr
- sailor moon party4K/yr
- sailor moon party supplies6K/yr
- sailor moon party favors3K/yr
- sailor moon balloons3K/yr
- sailor moon backdrop2K/yr
Top sailor moon birthday decorations 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
42Pcs Sailor Party Supplies Pack IncludesBannerCake Topper Blackdrop Balloons for Moon party Decoration
Sacuoskdyu$20.931.0★1 rev
40Pcs Sailor Party Supplies include 20 plates 20 napkins for the Sailor birthday party decoration
Generic$15.934.8★36 rev
Moon Cat Birthday Cake Topper - Glitter Moon Girls Sailor Party Decorations for Birthday Party Supplies
POSLIUE$7.984.9★13 rev
55PCS Sailor Anime Moon Stickers Teens Stickers for Water Bottle Laptop Phone Scrapbooking Journaling for Teens Adults for Party Supply Favor Decor (Gray)
SHOWSUP$7.014.8★47 rev
50ft Glitter Moon & Stars Garlands 6 Pack Gold Double-Side Crescent and Twinkle Stars Paper Hanging Decorations for Birthday Party Baby Shower Engagement Wedding for Nursery Kids Room Home Bedroom
TTSAM$6.724.6★614 rev
Newest
by launch date
Moon Cat Happy Birthday Glitter Cake Topper Moon Girls Sailor Party Decorations
Pezutoi$7.890 rev
Moon Cat Happy Birthday Cake Topper Glitter Moon Girls Sailor Party Decorations for Birthday
Oelirsy$7.983 rev
50pcs Sailor Anime Moon Stickers for Water Bottle Waterproof Vinyl Decal for Adult Teen Laptop Skateboard Phone Travel Case Bike Guitar Computer Helmet (red)
MINRAIN$6.3835 rev
55PCS Sailor Anime Moon Stickers Teens Stickers for Water Bottle Laptop Phone Scrapbooking Journaling for Teens Adults for Party Supply Favor Decor (Gray)
SHOWSUP$7.0147 rev
42Pcs Sailor Party Supplies Pack IncludesBannerCake Topper Blackdrop Balloons for Moon party Decoration
Sacuoskdyu$20.931 rev
Trending
90-day click momentumMoon Cat Happy Birthday Glitter Cake Topper Moon Girls Sailor Party Decorations
Pezutoi$7.890.0★
42Pcs Sailor Party Supplies Pack IncludesBannerCake Topper Blackdrop Balloons for Moon party Decoration
Sacuoskdyu$20.931.0★
50pcs Sailor Anime Moon Stickers for Water Bottle Waterproof Vinyl Decal for Adult Teen Laptop Skateboard Phone Travel Case Bike Guitar Computer Helmet (red)
MINRAIN$6.384.8★
Moon Cat Happy Birthday Cake Topper Glitter Moon Girls Sailor Party Decorations for Birthday
Oelirsy$7.984.6★
55PCS Sailor Anime Moon Stickers Teens Stickers for Water Bottle Laptop Phone Scrapbooking Journaling for Teens Adults for Party Supply Favor Decor (Gray)
SHOWSUP$7.014.8★
What buyers say about sailor moon birthday decorations
What buyers praise and complain about, mined from review topics.What buyers love
“The stickers themselves are high quality and great scans”
“Bright colors”
“a good size”
“they are durable”
“Great addition to other decorations”
“A great decorative set for celebrations or everyday décor”
“Great adhesion for the stickers”
“The way they reflected the light gave the whole dinner area a really nice”
“Good for the price”
“Item as described”
What buyers complain about
“Will require assembly”
“it wasnt easy to use”
“Joke gift”
“Tacky, too shiny”
“A little smaller than expected”
“kinda cheap looking”
“the material is just as thin or thinner than those regular plastic ones from the dollar tree”
“despite the fact that the string was very thin, which my husband struggled with for a few minutes,. having the kids opening them didn't help, ha”
“Print quality could be better”
Top return reasons
Common questions
- Is sailor moon birthday decorations profitable to sell on Amazon United States?
- The niche generates $26K/yr across 18 tracked products. 1 of 5 products launched in the last 360 days are still selling. 90-day search growth is -1.8%. Flapen's verdict: Skip it (38/100).
- How competitive is the sailor moon birthday decorations niche?
- 16 brands and 22 sellers compete. The top 5 products take 72% of clicks and top 5 brands hold 73% of demand.
- What do buyers complain about in sailor moon birthday decorations?
- Top complaints mined from reviews: Assembly/Installation, Ease Of Use, Gifting Purpose. The return rate is 3.6%.
- When does demand for sailor moon birthday decorations peak?
- Demand peaks in Aug; the busiest month runs 2.2× the quietest.
- What does it cost to enter the sailor moon birthday decorations niche?
- Listings span $6.38–$49.99; the average listing price is $13.59 (sweet spot $15–$100). The average incumbent carries 368 reviews — the moat a new listing must climb.