---
title: "Four Ever a Princess Birthday — $86K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/home-kitchen/four-ever-a-princess-birthday"
last_updated: "2026-08-10T23:50:21.773Z"
locale: en
meta:
description: "Niche score 52/100 · $86K/yr market · 194K searches/yr · $15.83 avg price. A small market ($86K/yr) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 52/100 · $86K/yr market · 194K searches/yr · $15.83 avg price. A small market ($86K/yr) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Four Ever a Princess Birthday — $86K/yr Amazon US Niche (2026) - Flapen"
---
# **four ever a princess birthday**
**Worth a look**
Shows no brand lock-in (top 5 brands take 42% of clicks), but a small market ($86K/yr) keeps it on the watch list.
Market size 21Growth 27Conversion 35Competition 72Returns 68Price range 63Avg price 77Brand share 93Review moat 91Quality gap 24
**Brand share**
**Great****42%**
top-5 brand share — no brand owns this niche
**Review moat**
**Great****174.84**
avg incumbent reviews — the moat a new listing must climb
**Avg price**
**Great****$15.83**
avg listing price — sweet spot $15–$100
**Competition**
**Good****42%**
top-5 click share — leaders hold, buyers still browse
**Returns**
**Good****2.3%**
return rate — above 5% kills the launch gate
**Price range**
**Good****$5.89–$30.77**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Conversion**
**Okay****2.8%**
search→purchase rate — share of searches ending in a sale
**Growth**
**Okay****+1.7%**
90-day search growth — must beat 0% to launch
**Quality gap**
**Bad****4.6★**
avg incumbent rating — lower means beatable quality
**Market size**
**Bad****$86K**
$86K/yr · 194K 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, four ever a princess birthday is a $86K/yr Amazon United States market (194K searches/yr). The top 5 brands hold 42% of demand. Demand peaks in Jan. Verdict: Worth a look — 52/100.
Data updated Jul 23, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **four ever a princess birthday market data**
- **Units sold / yr**
- **5K–6K**
- avg 0–100/product
- **Revenue / yr**
- **$79K–$95K**
- units × avg price
- **Conversion rate**
- **2.8%**
- **Avg BSR**
- **#2,803**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **95%**
- **Out of stock**
- **6.3%**
- **Avg brand age**
- **22 months**
- **Avg seller age**
- **176 days**
## **Competition & brand share**
The top 5 products take 42% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**34 **▼falling
**Sellers**
**53**
**Top-5 brand share**
**42%**
Top 20: 87%
**Top-5 click share**
**42%**
Top 20: 86%
**Open market**
**52%**
- Monnberry11% - cocomigo10% - Cextoga10% - Xynic6% - CasaPopz6% - AETGDDS6%
## **Demand & seasonality**
Weekly Amazon search volume, last 58 weeks — +1.7% search growth over the last 90 days.
5K3KPrime Day '25Spike '26 seasonJunJulAugSepOctNovDecJanFebMarAprMayJunJul
Peak months: Jan · busiest ÷ quietest = 2.0×
[**Open Trend **](https://flapen.com/research/us/home-kitchen/four-ever-a-princess-birthday/trend)
## **Top four ever a princess birthday search terms**
- **four ever a princess birthday decorations**96K/yr-2.2%1.8% conv. - **fourever a princess birthday decorations girl**35K/yr+8.9%1.6% conv. - **4 ever a princess birthday party decorations**30K/yr+5.3%1.5% conv. - **four ever a princess**17K/yr+7.4%1.2% conv. - **princess 4th birthday party decorations**7K/yr-0.5%2.2% conv. - **forever a princess party decoration**5K/yr+3.5%1.5% conv. - **four ever a princess birthday**3K/yr-15.1%0.3% conv. [**All search terms **](https://flapen.com/research/us/home-kitchen/four-ever-a-princess-birthday/search-terms)
## **Top four ever a princess birthday 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%$3K6%$5K9%$8K12%$10K1101001K10K 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**293 Pcs Four Ever a Princess Birthday Decorations Princess Party Decorations Set Serves 25 - Banner Balloon Arch Kit Tableware Cake Toppers Backdrop for 4th birthday decorations girl**cocomigo**$30.48**5.0★31 rev](https://www.amazon.com/dp/B0G5YGFHTQ) [2**Four Ever a Princess Birthday Decorations Princess 4th Birthday Party Decoration Supplies Balloon Garland Castle Balloon Tablecloth Backdrop Cake Topper**Monnberry**$28.86**4.8★24 rev](https://www.amazon.com/dp/B0G7Y2G8TL) [3**Four Ever A Princess Birthday Decorations Tableware 197pcs 4th Birthday Decorations Girl Plates and Napkins Cups Tablecloth Banner Honeycomb for Princess 4th Birthday Party Decorations Serve 24**Cextoga**$24.20**4.4★21 rev](https://www.amazon.com/dp/B0GHJKPF5T) [4**Xynic 201Pcs Four Ever a Princess Birthday Decorations Tableware Set Serves 25 Princess party Supplies Includes Banner Plates Tablecloth Cake Topper for 4th Birthday Decorations girl**Xynic**$23.86**4.5★23 rev](https://www.amazon.com/dp/B0FY6FWF3L) [5**Pink Birthday Number 4 Candle for Cake Pink Crown Cake Topper Princess Birthday Party Decorations Cupcake Topper Party Favors Decor Supplies**CasaPopz**$5.94**4.7★907 rev](https://www.amazon.com/dp/B0CT375HHQ)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Lomantank Princess 4th Birthday Decorations Set Four Ever a Princess Theme**Lomantank**$25.94**0 rev3mo ago](https://www.amazon.com/dp/B0GX5V9DB1) [**Four Ever A Princess Birthday Decorations Tableware 197pcs 4th Birthday Decorations Girl Plates and Napkins Cups Tablecloth Banner Honeycomb for Princess 4th Birthday Party Decorations Serve 24**Cextoga**$24.20**21 rev5mo ago](https://www.amazon.com/dp/B0GHJKPF5T) [**Four Ever a Princess Birthday Decorations Princess 4th Birthday Party Decoration Supplies Balloon Garland Castle Balloon Tablecloth Backdrop Cake Topper**Monnberry**$28.86**24 rev7mo ago](https://www.amazon.com/dp/B0G7Y2G8TL) [**Polinook 202 Pcs Four Ever a Princess Birthday Decorations Tableware Set - Service 24 Guests - Includes Banner Cake Topper Balloons Plates And Napkins Paper Cup - For 4th Birthday Decorations Girl**Polinook**$17.70**26 rev7mo ago](https://www.amazon.com/dp/B0G48CMKM8) [**293 Pcs Four Ever a Princess Birthday Decorations Princess Party Decorations Set Serves 25 - Banner Balloon Arch Kit Tableware Cake Toppers Backdrop for 4th birthday decorations girl**cocomigo**$30.48**31 rev7mo ago](https://www.amazon.com/dp/B0G5YGFHTQ)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Lomantank Princess 4th Birthday Decorations Set Four Ever a Princess Theme**Lomantank**$25.94**0.0★**▲ 219%**](https://www.amazon.com/dp/B0GX5V9DB1) [**293 Pcs Four Ever a Princess Birthday Decorations Princess Party Decorations Set Serves 25 - Banner Balloon Arch Kit Tableware Cake Toppers Backdrop for 4th birthday decorations girl**cocomigo**$30.48**5.0★**▲ 212%**](https://www.amazon.com/dp/B0G5YGFHTQ) [**Princess Balloons for 4th Birthday Decorations Girl Pink Castle Balloon Large Pink Crown Number 4 Balloons for Princess Birthday Party Decorations Supplies**Aikitub**$9.85**4.7★**▲ 142%**](https://www.amazon.com/dp/B0G2Y4LN3X) [**Mayflower Products Anagram Princess Once Upon A Time Foil Balloon Bouquet Medium Multicolor (3980801)**Amscan**$12.58**4.6★**▲ 98%**](https://www.amazon.com/dp/B07YQBPMZ6) [**Four Ever A Princess Birthday Decorations Tableware 197pcs 4th Birthday Decorations Girl Plates and Napkins Cups Tablecloth Banner Honeycomb for Princess 4th Birthday Party Decorations Serve 24**Cextoga**$24.20**4.4★**▲ 89%**](https://www.amazon.com/dp/B0GHJKPF5T)
**~~View all trending →~~**
## **What buyers say about four ever a princess birthday**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**22%
*“super solid quality”*
**Value For Money**12%
*“Excellent value”*
**Color**10%
*“Vibrant colors”*
**Advertised Vs Actual Product**7%
*“Exactly as described”*
**Design-Overall**7%
*“sophisticated touch to the design”*
**Size-Overall**6%
*“Great size”*
**Assembly/Installation**5%
*“The setup was incredibly straightforward”*
**Durability**4%
*“didnt break”*
**Ease Of Use**4%
*“it is very easy to use”*
**Gifting Purpose**4%
*“What a beautiful birthday decoration package”*
### **What buyers complain about **
**Quality-Overall**12%
*“While they're not the best quality party supplies you'll ever find”*
**Assembly/Installation**6%
*“Setup took a bit of time”*
**Size-Overall**6%
*“Muy pequeño”*
**Color**6%
*“Color was a little off than in the picture”*
**Advertised Vs Actual Product**3%
*“Definitely not what I thought it was going to be”*
**Defective Material/Parts**3%
*“Broken”*
**Functionality-Overall**3%
*“Blow it up and tie it down on all corners otherwise, it's useless”*
**Mechanism Issues**3%
*“The 4 doesnt start up right”*
**Ease Of Cleaning**3%
*“Like dirty”*
**Inflation/Deflation**3%
*“The balloons deflated within an hour of blowing up”*
### **Top return reasons **
**Size-Overall**32%
**Value For Money**19%
**Quality-Overall**8%
**Color**7%
**Advertised Vs Actual Product**6%
**Defective Material/Parts**4%
**Strength**3%
**Assembly/Installation**2%
**Product Condition**2%
**Material Quality**2%
## **Common questions**
- **Is four ever a princess birthday profitable to sell on Amazon United States?**
- The niche generates $86K/yr across 37 tracked products. 4 of 15 products launched in the last 360 days are still selling. 90-day search growth is +1.7%. Flapen's verdict: Worth a look (52/100).
- **How competitive is the four ever a princess birthday niche?**
- 34 brands and 53 sellers compete. The top 5 products take 42% of clicks and top 5 brands hold 42% of demand.
- **What do buyers complain about in four ever a princess birthday?**
- Top complaints mined from reviews: Quality-Overall, Assembly/Installation, Size-Overall. The return rate is 2.3%.
- **When does demand for four ever a princess birthday peak?**
- Demand peaks in Jan; the busiest month runs 2.0× the quietest.
- **What does it cost to enter the four ever a princess birthday niche?**
- Listings span $5.89–$30.77; the average listing price is $15.83 (sweet spot $15–$100). The average incumbent carries 175 reviews — the moat a new listing must climb.
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