---
title: "Number Blocks Party Supplies — $159K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/home-kitchen/number-blocks-party-supplies"
last_updated: "2026-08-10T20:33:33.866Z"
locale: en
meta:
description: "Niche score 52/100 · $159K/yr market · 327K searches/yr · $15.44 avg price. Soft demand (-7.9% this quarter) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 52/100 · $159K/yr market · 327K searches/yr · $15.44 avg price. Soft demand (-7.9% this quarter) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Number Blocks Party Supplies — $159K/yr Amazon US Niche (2026) - Flapen"
---
# **number blocks party supplies**
**Worth a look**
Shows a fragmented shelf (top 5 take 35% of clicks), but soft demand (-7.9% this quarter) keeps it on the watch list.
Market size 33Growth 21Conversion 39Competition 80Returns 77Price range 67Avg price 76Brand share 71Review moat 72Quality gap 24
**Competition**
**Great****35%**
top-5 click share — an open shelf
**Returns**
**Great****1.9%**
return rate — above 5% kills the launch gate
**Avg price**
**Great****$15.44**
avg listing price — sweet spot $15–$100
**Review moat**
**Good****618.88**
avg incumbent reviews — the moat a new listing must climb
**Brand share**
**Good****62%**
top-5 brand share — brands hold most of the demand
**Price range**
**Good****$6.85–$31.56**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Conversion**
**Okay****3.1%**
search→purchase rate — share of searches ending in a sale
**Market size**
**Okay****$159K**
$159K/yr · 327K searches
**Quality gap**
**Bad****4.6★**
avg incumbent rating — lower means beatable quality
**Growth**
**Bad****-7.9%**
90-day search growth — must beat 0% to launch
**Signals**[** Low Review Barrier**](https://flapen.com/research/niches?market=us&signal=low_review_barrier "Top brand's reviews < 500") [** Out of Stock**](https://flapen.com/research/niches?market=us&signal=out_of_stock "OOS rate > 10%")
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 ~~](https://flapen.com/research/methodology)
## **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.
8K6KSpike '25Prime Day '25Spike '26 seasonSepDecMarJunAugNovMarMay
No pronounced peak months · busiest ÷ quietest = 2.0×
[**Open Trend **](https://flapen.com/research/us/home-kitchen/number-blocks-party-supplies/trend)
## **Top number blocks party supplies search terms**
- **number blocks birthday decorations**107K/yr-14.3%1.3% conv. - **numberblocks birthday decorations**61K/yr+1.5%1.9% conv. - **numberblocks birthday**20K/yr+36.0%1.6% conv. - **number blocks party decorations**22K/yr-21.2%1.1% conv. - **number blocks birthday**14K/yr+6.6%1.1% conv. - **number blocks cake topper**11K/yr-10.9%1.5% conv. - **numberblocks party**10K/yr+9.3%1.3% conv. - **numberblocks party decorations**9K/yr+23.9%1.4% conv. - **number blocks party**10K/yr+6.7%1.4% conv. - **number blocks party favors**11K/yr-33.0%1.9% conv. [**All search terms **](https://flapen.com/research/us/home-kitchen/number-blocks-party-supplies/search-terms)
## **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.
0%3%$5K6%$10K9%$14K12%$19K1101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)1 product missing review or click data not plotted
All 24 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Number Birthday Decorations Number Party Supplies Include Happy Birthday Banner Cake Topper and Cupcake Toppers Balloons for Kids Party Decor**Fantarea**$25.45**5.0★5 rev](https://www.amazon.com/dp/B0GS162C6W) [2**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**$12.38**4.7★56 rev](https://www.amazon.com/dp/B0GHNHT6N4) [3**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**$16.80**5.0★2 rev](https://www.amazon.com/dp/B0GXCJ1GJQ) [4**141pcs Number Birthday Tableware Decorations Party Plates Cups Theme Napkins Tablecloth for Number Party Decoration**Shifigril**$31.56**4.5★26 rev](https://www.amazon.com/dp/B0F7XJKJBY) [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**$15.23**4.4★3 rev](https://www.amazon.com/dp/B0GW8G27FC)
**~~View all top sellers →~~**
### **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**$16.51**3 rev1mo ago](https://www.amazon.com/dp/B0GZVZRFGT) [**25pcs Number Cake Decorations with 1pcs Cake Topper 24pcs Cupcake Toppers for The Game Birthday Party Supplies**Fantarea**$9.94**0 rev1mo ago](https://www.amazon.com/dp/B0H2VDJTL2) [**Number Birthday Party Decorations 5x3ft Happy Birthday Back Drop Banner Theme Backdrop Banner for Game Party Decorations Indoor Outdoor.**Fantarea**$16.85**1 rev1mo ago](https://www.amazon.com/dp/B0H2V9N2J7) [**Numberbloocks Birthday Backdrop Cartoon Blocks Poster for Cartoon Theme Party Decorations Anime Birthday Supplies Background Studio Shoot Photo Props**PINUO**$11.46**1 rev2mo ago](https://www.amazon.com/dp/B0GZPRSMJD) [**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**$16.80**2 rev3mo ago](https://www.amazon.com/dp/B0GXCJ1GJQ)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**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**$16.51**4.3★**▲ 118%**](https://www.amazon.com/dp/B0GZVZRFGT) [**Number Birthday Party Decorations 5x3ft Happy Birthday Back Drop Banner Theme Backdrop Banner for Game Party Decorations Indoor Outdoor.**Fantarea**$16.85**4.0★**▲ 118%**](https://www.amazon.com/dp/B0H2V9N2J7) [**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**$16.80**5.0★**▲ 118%**](https://www.amazon.com/dp/B0GXCJ1GJQ) [**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**$23.64**3.5★**▲ 118%**](https://www.amazon.com/dp/B0GFVLNFQN) [**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**$15.23**4.4★**▲ 118%**](https://www.amazon.com/dp/B0GW8G27FC)
**~~View all trending →~~**
## **What buyers say about number blocks party supplies**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**19%
*“Amazing quality”*
**Fun/Entertainment Experience**13%
*“Fun toy”*
**Color**10%
*“colors are bright”*
**Value For Money**8%
*“affordable price”*
**Educational-Overall**6%
*“Excellent learning tool”*
**Advertised Vs Actual Product**5%
*“As advertised”*
**Size-Overall**4%
*“Nice size”*
**Durability**3%
*“Seems very durable”*
**Gifting Purpose**3%
*“Great gift idea”*
**Ease Of Use**3%
*“Easy to use”*
### **What buyers complain about **
**Quality-Overall**16%
*“Bad quality”*
**Size-Overall**10%
*“So small”*
**Leak-Proof**10%
*“leaked everywhere”*
**Durability**8%
*“Easily broken”*
**Value For Money**6%
*“Expensive for what you get”*
**Advertised Vs Actual Product**5%
*“Misleading”*
**Inflation/Deflation**4%
*“However, the small balloons could not be inflated by breath or by machine”*
**Color**3%
*“Its not a 2 pack of the same colors”*
**Strength**3%
*“Very flimsy”*
**Adhesion/Stickiness**2%
*“Abysmal Adhesive”*
### **Top return reasons **
**Size-Overall**19%
**Value For Money**17%
**Leak-Proof**11%
**Color**10%
**Advertised Vs Actual Product**9%
**Defective Material/Parts**7%
**Quality-Overall**5%
**Adhesion/Stickiness**3%
**Product Condition**2%
**Display Colors**2%
## **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.
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