9th birthday decorations for boys
Worth a lookShows no brand lock-in (top 5 brands take 43% of clicks), but strong incumbent ratings (4.7★) keeps it on the watch list.
Brand share
Great43%top-5 brand share — no brand owns this niche
Competition
Great33%top-5 click share — an open shelf
Review moat
Good530.87avg incumbent reviews — the moat a new listing must climb
Avg price
Good$14.75avg listing price — sweet spot $15–$100
Conversion
Good5.1%search→purchase rate — share of searches ending in a sale
Returns
Good2.7%return rate — above 5% kills the launch gate
Price range
Good$4.94–$25.74cheapest to priciest tracked listing — scored on the share inside $15–$100
Growth
Bad-0.3%90-day search growth — must beat 0% to launch
Market size
Bad$94K$94K/yr · 124K searches
Quality gap
Bad4.7★avg incumbent rating — lower means beatable quality
According to Flapen's Amazon United States niche tracking, 9th birthday decorations for boys is a $94K/yr Amazon United States market (124K searches/yr). The top 5 brands hold 43% of demand. Verdict: Worth a look — 53/100.
Data updated Jul 23, 2026 · scored weekly · How we score niches
9th birthday decorations for boys market data
- Units sold / yr
- 6K–8K
- avg 0–100/product
- Revenue / yr
- $89K–$118K
- units × avg price
- Conversion rate
- 5.1%
- Avg BSR
- #2,776
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 94%
- Out of stock
- 4.3%
- Avg brand age
- 22 months
- Avg seller age
- 183 days
Competition & brand share
Clicks spread well past the top 5 (33% combined) — an open shelf where new products get seen.Brands
38 falling
Sellers
42
Top-5 brand share
43%
Top 20: 84%
Top-5 click share
33%
Top 20: 76%
Open market
53%
- Juesly15%
- Vlipoeasn11%
- FINDRICH7%
- Eiurteao6%
- Zirtorei5%
- ZHUOWEISM4%
Demand & seasonality
Weekly Amazon search volume, last 72 weeks — -0.3% search growth over the last 90 days.No pronounced peak months · busiest ÷ quietest = 1.9×
Top 9th birthday decorations for boys search terms
- 9th birthday decorations for boys49K/yr
- 9 year old boy birthday decorations21K/yr
- 9th birthday boy15K/yr
- bruh im 9 birthday decorations9K/yr
- happy 9th birthday boy10K/yr
- level 9 birthday decorations for boys8K/yr
- 9 birthday decorations for boys5K/yr
- level 9 birthday decorations6K/yr
Top 9th birthday decorations for boys 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
Juesly 9 Year Old Birthday Gifts for Boys - Socks for Boys with Pop Up Birthday Card Presents for 9 Year Old
Juesly$9.994.8★776 rev
Video Game 9th Birthday Decorations for Boys Level 9 Birthday Decorations Include Banner Backdrop Sash Honeycomb Centerpieces Hanging Swirls Stickers Cake Topper for Gamer Birthday Party Supplies
FINDRICH$14.354.5★64 rev
Blue Sliver Happy 9th Birthday Decorations for Boys Men
Eiurteao$19.684.7★140 rev
Zirtorei 9th Birthday Decorations for Boys Girls 9pcs Blue Silver Bruh Im 9 Banner Happy 9th Birthday Balloons 9 Year Old Bday Party Supplies Sign
Zirtorei$11.714.3★60 rev
Vlipoeasn 9th Birthday Decorations Set for Boys Girls 35PCS Black Blue 9 Year Old Birthday Backdrop Banner Bruh Im 9 Party Supplies
Vlipoeasn$19.644.3★10 rev
Newest
by launch date
Mpanwen 9th Birthday Decorations for Boys Blue Black Bro Im 9 Year Old Party Supplies Decor for Boy 9th Birthday - Backdrop Banner Balloons Tablecloth Centerpieces Hanging Swirls Wall Signs
Mpanwen$21.893 rev
Zirtorei 9th Birthday Decorations for Boys Girls 9pcs Blue Silver Bruh Im 9 Banner Happy 9th Birthday Balloons 9 Year Old Bday Party Supplies Sign
Zirtorei$11.7160 rev
9th Birthday Decorations for Boys Girls Blue Silver Bruh Im 9 Birthday Party Supplies Kit with Backdrop Number 9 Foil Balloon Tablecloth Cake Topper & Balloon Arch
Nigifter$18.024 rev
215 Pcs 9th Birthday Decorations for Boys 9th Birthday Banner Plate and Napkins Set Backdrop Tablecover 9 Foil Balloon Blue Black Bruh Im 9 Year Old Boy Party Decorations
Xynic$19.9716 rev
Blue Sliver Happy 9th Birthday Decorations for Boys Men
Eiurteao$19.68140 rev
Trending
90-day click momentumZirtorei 9th Birthday Decorations for Boys Girls 9pcs Blue Silver Bruh Im 9 Banner Happy 9th Birthday Balloons 9 Year Old Bday Party Supplies Sign
Zirtorei$11.714.3★
Mpanwen 9th Birthday Decorations for Boys Blue Black Bro Im 9 Year Old Party Supplies Decor for Boy 9th Birthday - Backdrop Banner Balloons Tablecloth Centerpieces Hanging Swirls Wall Signs
Mpanwen$21.895.0★
9th Birthday Decorations for Boys Girls Blue Silver Bruh Im 9 Birthday Party Supplies Kit with Backdrop Number 9 Foil Balloon Tablecloth Cake Topper & Balloon Arch
Nigifter$18.024.5★
215 Pcs 9th Birthday Decorations for Boys 9th Birthday Banner Plate and Napkins Set Backdrop Tablecover 9 Foil Balloon Blue Black Bruh Im 9 Year Old Boy Party Decorations
Xynic$19.974.4★
Blue Sliver Happy 9th Birthday Decorations for Boys Men
Eiurteao$19.684.7★
What buyers say about 9th birthday decorations for boys
What buyers praise and complain about, mined from review topics.What buyers love
“Amazing quality”
“As described”
“Bright colors”
“Good value”
“Very sturdy design”
“Great Gift Idea”
“easy to put together”
“Easy to use”
“Item was durable for the time needed”
“Highly recommend for any gamer-loving kid”
What buyers complain about
“Definitely lower quality”
“It breaks very easily”
“was shorter than expected make sure to check length”
“Terrible quality and way too much time to put together”
“that banner is Lind of flimsy with 6–8 inch letters”
“Adhesive is not strong”
“Not as dense as I wanted them to be”
“Disappointed because I had already purchased regular blue ones on my own”
“It sure looks beautiful, however, the video is very deceptive”
“Really not worth the money”
Top return reasons
Common questions
- Is 9th birthday decorations for boys profitable to sell on Amazon United States?
- The niche generates $94K/yr across 47 tracked products. 3 of 22 products launched in the last 360 days are still selling. 90-day search growth is -0.3%. Flapen's verdict: Worth a look (53/100).
- How competitive is the 9th birthday decorations for boys niche?
- 38 brands and 42 sellers compete. The top 5 products take 33% of clicks and top 5 brands hold 43% of demand.
- What do buyers complain about in 9th birthday decorations for boys?
- Top complaints mined from reviews: Quality-Overall, Durability, Size-Overall. The return rate is 2.7%.
- When does demand for 9th birthday decorations for boys peak?
- Demand is steady year-round — the busiest month runs 1.9× the quietest.
- What does it cost to enter the 9th birthday decorations for boys niche?
- Listings span $4.94–$25.74; the average listing price is $14.75 (sweet spot $15–$100). The average incumbent carries 531 reviews — the moat a new listing must climb.