number blocks party supplies
Worth a lookShows a fragmented shelf (top 5 take 35% of clicks), but soft demand (-7.9% this quarter) keeps it on the watch list.
Competition
Great35%top-5 click share — an open shelf
Returns
Great1.9%return rate — above 5% kills the launch gate
Avg price
Great$15.44avg listing price — sweet spot $15–$100
Review moat
Good618.88avg incumbent reviews — the moat a new listing must climb
Brand share
Good62%top-5 brand share — brands hold most of the demand
Price range
Good$6.85–$31.56cheapest to priciest tracked listing — scored on the share inside $15–$100
Conversion
Okay3.1%search→purchase rate — share of searches ending in a sale
Market size
Okay$159K$159K/yr · 327K searches
Quality gap
Bad4.6★avg incumbent rating — lower means beatable quality
Growth
Bad-7.9%90-day search growth — must beat 0% to launch
According to Flapen's Amazon United States niche tracking, number blocks party supplies is a $159K/yr Amazon United States market (327K searches/yr). The top 5 brands hold 62% of demand. Verdict: Worth a look — 52/100.
Data updated Jul 23, 2026 · scored weekly · How we score niches
number blocks party supplies market data
- Units sold / yr
- 8K–10K
- avg 100–250/product
- Revenue / yr
- $124K–$154K
- units × avg price
- Conversion rate
- 3.1%
- Avg BSR
- #3,040
- Page quality
- 0%
- Prime
- 98%
- Sponsored
- 84%
- Out of stock
- 21.9%
- Avg brand age
- 29 months
- Avg seller age
- 166 days
Competition & brand share
Clicks spread well past the top 5 (35% combined) — an open shelf where new products get seen.Brands
27 rising
Sellers
36
Top-5 brand share
62%
Top 20: 96%
Top-5 click share
35%
Top 20: 75%
Open market
34%
- Fantarea23%
- Generic12%
- hand2mind11%
- JXJMYU10%
- Shifigril7%
- PRISIA4%
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — -7.9% search growth over the last 90 days.No pronounced peak months · busiest ÷ quietest = 2.0×
Top number blocks party supplies search terms
- number blocks birthday decorations107K/yr
- numberblocks birthday decorations61K/yr
- numberblocks birthday20K/yr
- number blocks party decorations22K/yr
- number blocks birthday14K/yr
- number blocks cake topper11K/yr
- numberblocks party10K/yr
- numberblocks party decorations9K/yr
- number blocks party10K/yr
- number blocks party favors11K/yr
Top number blocks party supplies 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
Number Birthday Decorations Number Party Supplies Include Happy Birthday Banner Cake Topper and Cupcake Toppers Balloons for Kids Party Decor
Fantarea$25.455.0★5 rev
24Pcs Number Blocks Make-a-face Stickers for Kids Teens Mixed & Matched with 8 Designed Number Blocks Stickers for Party Decoration Reward Decor Gift Idea
JXJMYU$12.384.7★56 rev
56 Pcs Number Birthday Party Decorations include Banner Backdrop Balloons Cake Toppers Tablecloth for Kids Birthday Party Math Themed Party Baby Shower Classroom Activity Supplies
Generic$16.805.0★2 rev
141pcs Number Birthday Tableware Decorations Party Plates Cups Theme Napkins Tablecloth for Number Party Decoration
Shifigril$31.564.5★26 rev
Number Blocks Birthday Party Decorations Cartoon Number Advanture Banner Cake Toppers Theme Party Decorations for Boys Indoor Outdoor Birthday Party Supplies Backdrop 5 * 3FT)
PRISIA$15.234.4★3 rev
Newest
by launch date
Number Birthday Party Decorations Set Letter Digital Blocks Cartoon-themed Party Supplies Include Banner Backdrop Balloons Cake Toppers and Tablecloth for Kids Birthday Party Supplies
Generic$16.513 rev
25pcs Number Cake Decorations with 1pcs Cake Topper 24pcs Cupcake Toppers for The Game Birthday Party Supplies
Fantarea$9.940 rev
Number Birthday Party Decorations 5x3ft Happy Birthday Back Drop Banner Theme Backdrop Banner for Game Party Decorations Indoor Outdoor.
Fantarea$16.851 rev
Numberbloocks Birthday Backdrop Cartoon Blocks Poster for Cartoon Theme Party Decorations Anime Birthday Supplies Background Studio Shoot Photo Props
PINUO$11.461 rev
56 Pcs Number Birthday Party Decorations include Banner Backdrop Balloons Cake Toppers Tablecloth for Kids Birthday Party Math Themed Party Baby Shower Classroom Activity Supplies
Generic$16.802 rev
Trending
90-day click momentumNumber Birthday Party Decorations Set Letter Digital Blocks Cartoon-themed Party Supplies Include Banner Backdrop Balloons Cake Toppers and Tablecloth for Kids Birthday Party Supplies
Generic$16.514.3★
Number Birthday Party Decorations 5x3ft Happy Birthday Back Drop Banner Theme Backdrop Banner for Game Party Decorations Indoor Outdoor.
Fantarea$16.854.0★
56 Pcs Number Birthday Party Decorations include Banner Backdrop Balloons Cake Toppers Tablecloth for Kids Birthday Party Math Themed Party Baby Shower Classroom Activity Supplies
Generic$16.805.0★
LADVCORP 60 Pcs Number Themed Block Square Plates 7 Cartoon Blocks Cute Face Party Plates Colorful Brick Number Birthday Tableware Sets for Girls Boys Teen Party Cartoon-themed Birthday Celebrations
LADVCORP$23.643.5★
Number Blocks Birthday Party Decorations Cartoon Number Advanture Banner Cake Toppers Theme Party Decorations for Boys Indoor Outdoor Birthday Party Supplies Backdrop 5 * 3FT)
PRISIA$15.234.4★
What buyers say about number blocks party supplies
What buyers praise and complain about, mined from review topics.What buyers love
“Amazing quality”
“Fun toy”
“colors are bright”
“affordable price”
“Excellent learning tool”
“As advertised”
“Nice size”
“Seems very durable”
“Great gift idea”
“Easy to use”
What buyers complain about
“Bad quality”
“So small”
“leaked everywhere”
“Easily broken”
“Expensive for what you get”
“Misleading”
“However, the small balloons could not be inflated by breath or by machine”
“Its not a 2 pack of the same colors”
“Very flimsy”
“Abysmal Adhesive”
Top return reasons
Common questions
- Is number blocks party supplies profitable to sell on Amazon United States?
- The niche generates $159K/yr across 49 tracked products. 2 of 24 products launched in the last 360 days are still selling. 90-day search growth is -7.9%. Flapen's verdict: Worth a look (52/100).
- How competitive is the number blocks party supplies niche?
- 27 brands and 36 sellers compete. The top 5 products take 35% of clicks and top 5 brands hold 62% of demand.
- What do buyers complain about in number blocks party supplies?
- Top complaints mined from reviews: Quality-Overall, Size-Overall, Leak-Proof. The return rate is 1.9%.
- When does demand for number blocks party supplies peak?
- Demand is steady year-round — the busiest month runs 2.0× the quietest.
- What does it cost to enter the number blocks party supplies niche?
- Listings span $6.85–$31.56; the average listing price is $15.44 (sweet spot $15–$100). The average incumbent carries 619 reviews — the moat a new listing must climb.