---
title: "Kirby Birthday Party Decorations — $75K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/home-kitchen/kirby-birthday-party-decorations"
last_updated: "2026-08-06T16:37:01.045Z"
locale: en
meta:
description: "Niche score 48/100 · $75K/yr market · 132K searches/yr · $13.52 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 48/100 · $75K/yr market · 132K searches/yr · $13.52 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Kirby Birthday Party Decorations — $75K/yr Amazon US Niche (2026) - Flapen"
---
# **kirby birthday party decorations**
**Skip it**
A small market ($75K/yr) — this niche doesn't clear our bar today.
Market size 19Growth 21Conversion 52Competition 63Returns 75Price range 51Avg price 63Brand share 73Review moat 81Quality gap 28
**Review moat**
**Great****374.52**
avg incumbent reviews — the moat a new listing must climb
**Returns**
**Great****2.0%**
return rate — above 5% kills the launch gate
**Brand share**
**Good****61%**
top-5 brand share — brands hold most of the demand
**Competition**
**Good****47%**
top-5 click share — leaders hold, buyers still browse
**Avg price**
**Good****$13.52**
avg listing price — sweet spot $15–$100
**Conversion**
**Good****4.2%**
search→purchase rate — share of searches ending in a sale
**Price range**
**Good****$5.46–$24.90**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Quality gap**
**Okay****4.6★**
avg incumbent rating — lower means beatable quality
**Growth**
**Bad****-7.0%**
90-day search growth — must beat 0% to launch
**Market size**
**Bad****$75K**
$75K/yr · 132K searches
**Signals**[** No Dominant Brand**](https://flapen.com/research/niches?market=us&signal=no_dominant_brand "Top brand's click share < 20%") [** Low Review Barrier**](https://flapen.com/research/niches?market=us&signal=low_review_barrier "Top brand's reviews < 500")
According to Flapen's Amazon United States niche tracking, kirby birthday party decorations is a $75K/yr Amazon United States market (132K searches/yr). The top 5 brands hold 61% of demand. Verdict: Skip it — 48/100.
Data updated Jul 23, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **kirby birthday party decorations market data**
- **Units sold / yr**
- **5K–6K**
- avg 100–250/product
- **Revenue / yr**
- **$68K–$81K**
- units × avg price
- **Conversion rate**
- **4.2%**
- **Avg BSR**
- **#2,905**
- **Page quality**
- **0%**
- **Prime**
- **97%**
- **Sponsored**
- **35%**
- **Out of stock**
- **7.9%**
- **Avg brand age**
- **29 months**
- **Avg seller age**
- **181 days**
## **Competition & brand share**
The top 5 products take 47% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**23 **▼falling
**Sellers**
**68**
**Top-5 brand share**
**61%**
Top 20: 98%
**Top-5 click share**
**47%**
Top 20: 88%
**Open market**
**34%**
- SDONY16% - karg14% - Generic12% - LDAKZFV11% - PRISIA7% - ELZEM4%
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -7.0% search growth over the last 90 days.
4K3KSpike '25Prime Day '25Spike '26 seasonSepDecMarJunAugNovMarMay
No pronounced peak months · busiest ÷ quietest = 2.0×
[**Open Trend **](https://flapen.com/research/us/home-kitchen/kirby-birthday-party-decorations/trend)
## **Top kirby birthday party decorations search terms**
- **kirby birthday party decorations**43K/yr-17.8%2.7% conv. - **kirby party decorations**21K/yr+12.4%2.9% conv. - **kirby birthday**15K/yr-5.0%1.8% conv. - **kirby party favors**12K/yr-11.2%2.5% conv. - **kirby balloons**9K/yr+5.0%2.8% conv. - **kirby birthday decorations**10K/yr-11.4%3.0% conv. - **kirby decorations**8K/yr+10.8%2.3% conv. - **kirby party supplies**8K/yr-9.9%2.0% conv. - **kirby party**6K/yr-7.4%3.2% conv. [**All search terms **](https://flapen.com/research/us/home-kitchen/kirby-birthday-party-decorations/search-terms)
## **Top kirby birthday party 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.
0%4%$3K8%$6K12%$9K16%$12K1101001K10K 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**karg Birthday Party Supplies Favors for Boys Kids Super Star Birthday Party Decorations Including Tableware Backdrop Cake Cupcake Toppers Ballons**karg**$18.38**4.7★81 rev](https://www.amazon.com/dp/B0D625XXHZ) [2**Kirby Party Supplies Party Supplies 40pcs include 20 plates 20 napkins for Kirby Party party decoration**LDAKZFV**$15.67**4.1★6 rev](https://www.amazon.com/dp/B0G6YMBK6R) [3**Cartoon Kirbies Birthday Photography Backdrop 5x3ft Photo Background Cartoon Star Happy Birthday Banner for Party Supplies Decorations (5x3ft)**Generic**$16.18**4.6★40 rev](https://www.amazon.com/dp/B0FH8HW1YM) [4**Cartoon Star Birthday Party Supplies for Kirbayy Star Birthday Party Decorations Including dinner plates napkins Ballons and tablecloth for Kirbies Party Supplies**PRISIA**$15.85**5.0★2 rev](https://www.amazon.com/dp/B0GX6Q2LK4) [5**Star Birthday Decorations Star Party Supplies Include Happy Birthday Banner Cake Topper and Cupcake Toppers Balloons for Kids Party Decor**SDONY**$20.01**4.4★4 rev](https://www.amazon.com/dp/B0GPQCK26M)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Cartoon Star Birthday Party Supplies for Kirbayy Star Birthday Party Decorations Including dinner plates napkins Ballons and tablecloth for Kirbies Party Supplies**PRISIA**$15.85**2 rev3mo ago](https://www.amazon.com/dp/B0GX6Q2LK4) [**42Pack Cartoon Star Game Backdrop Banner Cake Topper and Balloons Set**Auysbytdd**$16.92**0 rev4mo ago](https://www.amazon.com/dp/B0GSV93TRV) [**Star Birthday Decorations Star Party Supplies Include Happy Birthday Banner Cake Topper and Cupcake Toppers Balloons for Kids Party Decor**SDONY**$20.01**4 rev5mo ago](https://www.amazon.com/dp/B0GPQCK26M) [**8Pcs Star Honeycomb Table Centerpiece Star Birthday Party Supplies Table Decorations for Kids Party Decorations**SDONY**$16.91**2 rev5mo ago](https://www.amazon.com/dp/B0GPQ11LPB) [**Cartoon Star Birthday Party Backdrop and Decoration Kirbyy Banner Cake Topper Shoot Photo Background Props for Boys and Girls - 5x3ft**Ezcpigei**$13.71**3 rev5mo ago](https://www.amazon.com/dp/B0GMM33VR6)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**42Pack Cartoon Star Game Backdrop Banner Cake Topper and Balloons Set**Auysbytdd**$16.92**0.0★**▲ 279%**](https://www.amazon.com/dp/B0GSV93TRV) [**Cartoon Game Party Decorations Star Birthday Party Supplies Includes Banner- Cake Topper - 24 Cupcake Toppers - 18 Balloons**ELZEM**$12.50**4.6★**▲ 275%**](https://www.amazon.com/dp/B0GJD5DV2Y) [**Cartoon Star Birthday Party Supplies for Kirbayy Star Birthday Party Decorations Including dinner plates napkins Ballons and tablecloth for Kirbies Party Supplies**PRISIA**$15.85**5.0★**▲ 274%**](https://www.amazon.com/dp/B0GX6Q2LK4) [**Bioworld Kirby Character & Stars All-Over Print Womens White Crew Neck Short Sleeve Baby Tee-Medium**Bioworld**$12.65**4.5★**▲ 241%**](https://www.amazon.com/dp/B0DSW8X1C5) [**Cartoon Star Birthday Party Backdrop and Decoration Kirbyy Banner Cake Topper Shoot Photo Background Props for Boys and Girls - 5x3ft**Ezcpigei**$13.71**3.5★**▲ 236%**](https://www.amazon.com/dp/B0GMM33VR6)
**~~View all trending →~~**
## **What buyers say about kirby birthday party decorations**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**20%
*“Cute Product”*
**Advertised Vs Actual Product**13%
*“Came exactly as pictured”*
**Value For Money**11%
*“Definitely worth the buy”*
**Design-Overall**7%
*“The designs are cute”*
**Fun/Entertainment Experience**6%
*“Hilarious Kirby stickers”*
**Gifting Purpose**6%
*“Cute gift”*
**Color**5%
*“bright colors”*
**Size-Overall**5%
*“Good size”*
**Adhesion/Stickiness**5%
*“They stick in place and are bright and colorful”*
**Ease Of Use**4%
*“easy to use”*
### **What buyers complain about **
**Size-Overall**26%
*“Small”*
**Thickness**17%
*“Super thin”*
**Smell**9%
*“The balloons smell really bad”*
**Adhesion/Stickiness**9%
*“don't stay sticky for a while”*
**Assembly/Installation**9%
*“so I couldn't put it together the intended way”*
**Value For Money**8%
*“I don't think this is worth the buy”*
**Quality-Overall**8%
*“Terrible quality”*
**Durability**5%
*“It broke the day my daughter opened it”*
**Color**5%
*“Colors might be a little dark”*
**Inflation/Deflation**3%
*“Deflated very quickly”*
### **Top return reasons **
**Size-Overall**40%
**Advertised Vs Actual Product**13%
**Value For Money**11%
**Color**7%
**Quality-Overall**6%
**Defective Material/Parts**2%
**Gifting Purpose**2%
**Material Quality**2%
**Brightness/Shine/Glow**2%
**Functionality-Overall**2%
## **Common questions**
- **Is kirby birthday party decorations profitable to sell on Amazon United States?**
- The niche generates $75K/yr across 31 tracked products. 1 of 13 products launched in the last 360 days are still selling. 90-day search growth is -7.0%. Flapen's verdict: Skip it (48/100).
- **How competitive is the kirby birthday party decorations niche?**
- 23 brands and 68 sellers compete. The top 5 products take 47% of clicks and top 5 brands hold 61% of demand.
- **What do buyers complain about in kirby birthday party decorations?**
- Top complaints mined from reviews: Size-Overall, Thickness, Smell. The return rate is 2.0%.
- **When does demand for kirby birthday party decorations peak?**
- Demand is steady year-round — the busiest month runs 2.0× the quietest.
- **What does it cost to enter the kirby birthday party decorations niche?**
- Listings span $5.46–$24.90; the average listing price is $13.52 (sweet spot $15–$100). The average incumbent carries 375 reviews — the moat a new listing must climb.
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