---
title: "21 Balloons — $117K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/home-kitchen/21-balloons"
last_updated: "2026-08-09T08:26:26.208Z"
locale: en
meta:
description: "Niche score 49/100 · $117K/yr market · 191K searches/yr · $7.46 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 49/100 · $117K/yr market · 191K searches/yr · $7.46 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "21 Balloons — $117K/yr Amazon US Niche (2026) - Flapen"
---
# **21 balloons**
**Skip it**
Soft demand (-11.6% this quarter) — this niche doesn't clear our bar today.
Market size 27Growth 19Conversion 80Competition 79Returns 49Price range 32Avg price 21Brand share 79Review moat 43Quality gap 45
**Conversion**
**Great****8.2%**
search→purchase rate — share of searches ending in a sale
**Competition**
**Great****36%**
top-5 click share — an open shelf
**Brand share**
**Great****56%**
top-5 brand share — no brand owns this niche
**Returns**
**Okay****3.1%**
return rate — above 5% kills the launch gate
**Quality gap**
**Okay****4.5★**
avg incumbent rating — lower means beatable quality
**Review moat**
**Okay****2,168.16**
avg incumbent reviews — the moat a new listing must climb
**Price range**
**Okay****$4.93–$19.76**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Market size**
**Okay****$117K**
$117K/yr · 191K searches
**Avg price**
**Bad****$7.46**
avg listing price — sweet spot $15–$100
**Growth**
**Bad****-11.6%**
90-day search growth — must beat 0% to launch
**Signals**[** No Dominant Brand**](https://flapen.com/research/niches?market=us&signal=no_dominant_brand "Top brand's click share < 20%")
According to Flapen's Amazon United States niche tracking, 21 balloons is a $117K/yr Amazon United States market (191K searches/yr). The top 5 brands hold 56% of demand. Verdict: Skip it — 49/100.
Data updated Jul 10, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **21 balloons market data**
- **Units sold / yr**
- **13K–15K**
- avg 250–500/product
- **Revenue / yr**
- **$93K–$112K**
- units × avg price
- **Conversion rate**
- **8.2%**
- **Avg BSR**
- **#584**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **98%**
- **Out of stock**
- **2.2%**
- **Avg brand age**
- **25 months**
- **Avg seller age**
- **194 days**
## **Competition & brand share**
Clicks spread well past the top 5 (36% combined) — an open shelf where new products get seen.
**Brands**
**30 **▲rising
**Sellers**
**34**
**Top-5 brand share**
**56%**
Top 20: 92%
**Top-5 click share**
**36%**
Top 20: 74%
**Open market**
**39%**
- Lingqiang16% - COLORFUL ELVES11% - AIQINHU11% - KAINSY9% - Scorpio9% - LHOAVWE6%
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -11.6% search growth over the last 90 days.
5K4KSpike '24Spike '25Spike '26 seasonSepDecMarJunAugNovMarMay
No pronounced peak months · busiest ÷ quietest = 1.7×
[**Open Trend **](https://flapen.com/research/us/home-kitchen/21-balloons/trend)
## **Top 21 balloons search terms**
- **21 balloons**66K/yr-1.5%6.8% conv. - **21st birthday balloons**56K/yr-5.0%3.4% conv. - **21 balloon**15K/yr-0.7%6.4% conv. - **21st balloons**7K/yr+3.8%4.0% conv. - **21 number balloons**5K/yr+15.7%5.1% conv. - **21st birthday balloon**5K/yr+19.4%3.9% conv. - **21 ballons**4K/yr-1.5%5.5% conv. - **21 birthday balloons**3K/yr+7.8%6.5% conv. - **21 balloon number**31K/yr-88.4%4.4% conv. [**All search terms **](https://flapen.com/research/us/home-kitchen/21-balloons/search-terms)
## **Top 21 balloons 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%$4K6%$7K9%$11K12%$14K1101001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 24 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Champagne Gold Large Number 21 Balloon 40 Inch Light Gold Foil Helium Number Balloons Giant Mylar Number 21 Balloons for 21 Years Old Birthday Party Anniversary Decorations (Champagne Gold 21)**AIQINHU**$6.93**4.4★331 rev](https://www.amazon.com/dp/B0DZBNKNBB) [2**40inch Jumbo Black 21 number balloons for 21st Birthday Decorations helium balloons party supplies use them as Props for Photos (Black 21)**Scorpio**$6.06**4.6★1,235 rev](https://www.amazon.com/dp/B07556CB2G) [3**Silver 21 Number Balloons Big Giant Jumbo Large Number 21 Foil Mylar Balloons for Girl Women Men 21st Birthday Party Supplies 21 Anniversary Events Decorations-40 inch**COLORFUL ELVES**$7.95**4.5★7,210 rev](https://www.amazon.com/dp/B07M65B54D) [4**Champagne Gold 21st Birthday Balloons for Her 40In Light Gold Foil Number 21 Balloons for Boys Girls Birthday Party Balloons Numbers 2 and 1 for Women Men 12th 21st Anniversary Decorations Supplies**Lingqiang**$7.91**4.3★4,285 rev](https://www.amazon.com/dp/B0C7Z3TCTS) [5**Beige 21st Birthday Balloons Number 21 40 Inch Large Foil 1 & 2 Numbers Balloons for 21 Year Old Boys Girls Cream Giant Helium Balloon for Women Men 21st 12th Birthday Anniversary Party Decorations**KAINSY**$6.97**4.4★592 rev](https://www.amazon.com/dp/B0DK77Q4J2)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**4 Pcs Champagne Balloons Huge Rose Gold Champagne Bottle Goblet Aluminum Foil Balloons for Birthday Bachelorette Bridal Shower Wedding Anniversary Engagement Party Decorations Supplies**BSRESIN**$6.79**252 rev1y ago](https://www.amazon.com/dp/B0FCXF9155) [**Rose Gold 21st Birthday Decorations for Her 21 Balloon Number 40 Inch Champagne Balloon for Rose Gold Birthday Decorations Bachelorette Party Decor**TOPDAOYUN**$8.39**6 rev1y ago](https://www.amazon.com/dp/B0F8B74YQ4) [**40 Inch 21 Number Balloon Black Birthday Decorations for Men Women Birthday Balloon for 12 21st Party Decor Anniversaries Celebration Party Graduation**Enyeopd**$5.91**752 rev1y ago](https://www.amazon.com/dp/B0F42XTGPQ) [**Big Number 21 Balloons Light Dusty Blue Foil 21 Balloon Numbers 40 Inch Giant 21st Birthday Party Decor Pastel Baby Sky Blue Mylar Helium Self Inflating Balloon for Boys Men Anniversary Decorations**Froova**$7.90**838 rev1y ago](https://www.amazon.com/dp/B0F1YVLDFM) [**Light Pink 21st Birthday Balloon for Women 40 Self Inflating Mylar Number 21 Balloons Big Blush Pastel Pink Foil 2 & 1 Helium Balloon for Her Boho Coquette 12th 21st Birthday Party Decorations**KAINSY**$7.02**592 rev1y ago](https://www.amazon.com/dp/B0F1NBD95K)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Champagne Gold Large Number 21 Balloon 40 Inch Light Gold Foil Helium Number Balloons Giant Mylar Number 21 Balloons for 21 Years Old Birthday Party Anniversary Decorations (Champagne Gold 21)**AIQINHU**$6.93**4.4★**▲ 168%**](https://www.amazon.com/dp/B0DZBNKNBB) [**Jonhamwelbor 21 Number Balloons Silver Giant Jumbo Big Large Number 21 Foil Mylar Balloons for 12th or 21st Birthday Party Supplies 12 or 21 Anniversary Events Decorations**Jonhamwelbor**$7.95**4.5★**▲ 134%**](https://www.amazon.com/dp/B08D6ZZPQR) [**Big Number 21 Balloons Light Dusty Blue Foil 21 Balloon Numbers 40 Inch Giant 21st Birthday Party Decor Pastel Baby Sky Blue Mylar Helium Self Inflating Balloon for Boys Men Anniversary Decorations**Froova**$7.90**4.4★**▲ 116%**](https://www.amazon.com/dp/B0F1YVLDFM) [**Beige 21st Birthday Balloons Number 21 40 Inch Large Foil 1 & 2 Numbers Balloons for 21 Year Old Boys Girls Cream Giant Helium Balloon for Women Men 21st 12th Birthday Anniversary Party Decorations**KAINSY**$6.97**4.4★**▲ 114%**](https://www.amazon.com/dp/B0DK77Q4J2) [**40 Inch Number Balloons 12/21 Black Big Giant Jumbo Number Foil Mylar Balloons for 12th/21th Birthday Party Supplies Anniversary Events Decorations(black-12/21)**xiangsushijie**$5.90**4.2★**▲ 112%**](https://www.amazon.com/dp/B0DJ8HS86S)
**~~View all trending →~~**
## **What buyers say about 21 balloons**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**24%
*“the quality of these balloons are really good”*
**Size-Overall**14%
*“Good size”*
**Color**13%
*“the color was perfect”*
**Advertised Vs Actual Product**10%
*“Just what I was looking for”*
**Value For Money**9%
*“Well worth it”*
**Assembly/Installation**6%
*“Easy to install”*
**Fun/Entertainment Experience**4%
*“Fun facts”*
**Design-Overall**3%
*“Good Decor”*
**Durability**3%
*“Durable and great quality”*
**Inflation/Deflation**2%
*“Easy to inflate and super cute”*
### **What buyers complain about **
**Inflation/Deflation**29%
*“Would not fully inflate”*
**Quality-Overall**23%
*“the balloons are bad quality”*
**Color**10%
*“More green than tan”*
**Material Quality**5%
*“material easily torn”*
**Value For Money**5%
*“Waste of money”*
**Functionality-Overall**5%
*“Deflating 22”*
**Size-Overall**5%
*“Too big”*
**Smell**5%
*“had a chemical smell”*
**Advertised Vs Actual Product**5%
*“the banner had mis information”*
**Ease Of Use**5%
*“Would have been great if we were able to use it but unfortunately we could not.”*
### **Top return reasons **
**Color**31%
**Size-Overall**18%
**Inflation/Deflation**15%
**Value For Money**12%
**Advertised Vs Actual Product**5%
**Leak-Proof**4%
**Defective Material/Parts**3%
**Quality-Overall**3%
**Functionality-Overall**3%
**Ease Of Use**1%
## **Common questions**
- **Is 21 balloons profitable to sell on Amazon United States?**
- The niche generates $117K/yr across 51 tracked products. 0 of 6 products launched in the last 360 days are still selling. 90-day search growth is -11.6%. Flapen's verdict: Skip it (49/100).
- **How competitive is the 21 balloons niche?**
- 30 brands and 34 sellers compete. The top 5 products take 36% of clicks and top 5 brands hold 56% of demand.
- **What do buyers complain about in 21 balloons?**
- Top complaints mined from reviews: Inflation/Deflation, Quality-Overall, Color. The return rate is 3.1%.
- **When does demand for 21 balloons peak?**
- Demand is steady year-round — the busiest month runs 1.7× the quietest.
- **What does it cost to enter the 21 balloons niche?**
- Listings span $4.93–$19.76; the average listing price is $7.46 (sweet spot $15–$100). The average incumbent carries 2,168 reviews — the moat a new listing must climb.
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