---
title: "Ninjago Birthday Party Supplies — $107K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/home-kitchen/ninjago-birthday-party-supplies"
last_updated: "2026-08-07T18:38:34.854Z"
locale: en
meta:
description: "Niche score 56/100 · $107K/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 56/100 · $107K/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Ninjago Birthday Party Supplies — $107K/yr Amazon US Niche (2026) - Flapen"
---
# **ninjago birthday party supplies**
**Worth a look**
Shows a thin review moat (37 avg reviews), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Market size 26Growth 34Conversion 51Competition 70Returns 62Price range 75Avg price 81Brand share 76Review moat 98Quality gap 47
**Review moat**
**Incredible****36.69**
avg incumbent reviews — the moat a new listing must climb
**Avg price**
**Great****$17.22**
avg listing price — sweet spot $15–$100
**Brand share**
**Great****59%**
top-5 brand share — no brand owns this niche
**Price range**
**Great****$8.41–$35.33**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Competition**
**Good****43%**
top-5 click share — leaders hold, buyers still browse
**Returns**
**Good****2.5%**
return rate — above 5% kills the launch gate
**Conversion**
**Good****4.1%**
search→purchase rate — share of searches ending in a sale
**Quality gap**
**Okay****4.5★**
avg incumbent rating — lower means beatable quality
**Growth**
**Okay****+6.9%**
90-day search growth — must beat 0% to launch
**Market size**
**Okay****$107K**
$107K/yr · 151K 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, ninjago birthday party supplies is a $107K/yr Amazon United States market (151K searches/yr). The top 5 brands hold 59% of demand. Verdict: Worth a look — 56/100.
Data updated Jul 23, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **ninjago birthday party supplies market data**
- **Units sold / yr**
- **6K–8K**
- avg 100–250/product
- **Revenue / yr**
- **$103K–$138K**
- units × avg price
- **Conversion rate**
- **4.1%**
- **Avg BSR**
- **#2,747**
- **Page quality**
- **0%**
- **Prime**
- **97%**
- **Sponsored**
- **56%**
- **Out of stock**
- **10.0%**
- **Avg brand age**
- **32 months**
- **Avg seller age**
- **176 days**
## **Competition & brand share**
The top 5 products take 43% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**21 **▼falling
**Sellers**
**23**
**Top-5 brand share**
**59%**
Top 20: 99%
**Top-5 click share**
**43%**
Top 20: 88%
**Open market**
**35%**
- Shifigril19% - ELZEM17% - ShrooFit9% - karg8% - FFGJA6% - PINUO5%
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — +6.9% search growth over the last 90 days.
4K3KSpike '25Prime Day '25Spike '26 seasonSepDecMarJunAugNovMarMay
No pronounced peak months · busiest ÷ quietest = 2.2×
[**Open Trend **](https://flapen.com/research/us/home-kitchen/ninjago-birthday-party-supplies/trend)
## **Top ninjago birthday party supplies search terms**
- **ninjago birthday decorations**62K/yr+12.9%3.6% conv. - **lego ninjago birthday decorations**17K/yr+12.4%2.2% conv. - **ninjago birthday**15K/yr+10.1%2.4% conv. - **ninjago party decorations**16K/yr-10.0%4.1% conv. - **ninjago birthday party supplies**9K/yr-13.7%2.1% conv. - **ninjago party**8K/yr-4.4%2.5% conv. - **ninjago balloons**6K/yr+18.3%4.3% conv. - **lego ninjago party decorations**6K/yr+12.0%3.0% conv. - **ninjago party supplies**7K/yr+4.3%3.3% conv. - **ninjago decorations**5K/yr+3.3%3.1% conv. [**All search terms **](https://flapen.com/research/us/home-kitchen/ninjago-birthday-party-supplies/search-terms)
## **Top ninjago birthday 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%4%$4K8%$9K12%$13K16%$17K1101001K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)4 products 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**Party Decorations Ninja Birthday Party Supplies Includes Banner- Cake Topper - Cupcake Toppers - Balloons**ELZEM**$23.77**4.4★6 rev](https://www.amazon.com/dp/B0G7WT8BQP) [2**27pcs Ninja Party Decoration Pack IncludesBannerCake TopperBlackdrop for Ninja party supplies**Shifigril**$24.32**3.8★16 rev](https://www.amazon.com/dp/B0F7XJCM17) [3**Ninja Party Decorations Birthday Party Supplies For Cartoon Ninja Hero Party Supplies Includes Banner - Cake Topper - 24 Cupcake Toppers - 18 Balloons**karg**$16.72**4.8★15 rev](https://www.amazon.com/dp/B0FKN8GBCK) [4**ShrooFit Ninja-go Party Supplies 40pck include 20 plates 20 napkins for the birthday Ninja party decoration**ShrooFit**$15.30**4.2★73 rev](https://www.amazon.com/dp/B0GCMS782R) [5**40PCS Ninja-go Party Supplies Set Birthday Decorations Tableware Kit With 20 7Plates 20 Napkins for Ninja Party Decoration**Kangzilang**$14.20**3.9★6 rev](https://www.amazon.com/dp/B0GFZBTLPD)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**25pcs For Ninja Cartoon Birthday Decorations with 24pcs Cupcake Toppers 1pcs Cake Topper for Birthday Party Supplies.**FFGJA**$11.52**5 rev3mo ago](https://www.amazon.com/dp/B0GWXZ9ZYK) [**8Pcs For Ninja Honeycomb Table Centerpiece Birthday Party Supplies Table Decorations for Kids Party Decorations.**FFGJA**$17.88**0 rev3mo ago](https://www.amazon.com/dp/B0GWY18R62) [**FFGJA 12pcs For Ninja Cartoon Party Gift Bags with Handles Cartoon Birthday Party Supplies for Party Decorations.**FFGJA**$13.80**0 rev3mo ago](https://www.amazon.com/dp/B0GWXWZCGX) [**Ninja Hero Birthday Party Decorations Cartoon Hero Party Supply Set for Kids with Happy Birthday Banner Swirls Centerpieces 18 Balloons for Ninja Hero Party Decorations**Ezcpigei**$15.19**4 rev5mo ago](https://www.amazon.com/dp/B0GLNNBMGX) [**40PCS Ninja-go Party Supplies Set Birthday Decorations Tableware Kit With 20 7Plates 20 Napkins for Ninja Party Decoration**Kangzilang**$14.20**6 rev6mo ago](https://www.amazon.com/dp/B0GFZBTLPD)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**25pcs For Ninja Cartoon Birthday Decorations with 24pcs Cupcake Toppers 1pcs Cake Topper for Birthday Party Supplies.**FFGJA**$11.52**3.5★**▲ 186%**](https://www.amazon.com/dp/B0GWXZ9ZYK) [**FFGJA 12pcs For Ninja Cartoon Party Gift Bags with Handles Cartoon Birthday Party Supplies for Party Decorations.**FFGJA**$13.80**0.0★**▲ 185%**](https://www.amazon.com/dp/B0GWXWZCGX) [**8Pcs For Ninja Honeycomb Table Centerpiece Birthday Party Supplies Table Decorations for Kids Party Decorations.**FFGJA**$17.88**0.0★**▲ 184%**](https://www.amazon.com/dp/B0GWY18R62) [**NInja Hero Birthday Decorations 59x35.4 in Cartoon Ninja Happy Birthday Backdrop Cake Toppers for Fans Birthday Party Supplies**picidae**$11.80**5.0★**▲ 183%**](https://www.amazon.com/dp/B0GXD734R8) [**27Pack Ninja-go Birthday Party Supplies Pack IncludesBannerCake TopperBlackdrop for party supplies (Green01)**ShrooFit**$22.49**4.3★**▲ 183%**](https://www.amazon.com/dp/B0GDDF7H7L)
**~~View all trending →~~**
## **What buyers say about ninjago birthday party supplies**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**25%
*“Good quality”*
**Advertised Vs Actual Product**20%
*“Just what we wanted”*
**Color**9%
*“Great colors”*
**Fun/Entertainment Experience**8%
*“Sturdy and lots of fun”*
**Size-Overall**5%
*“Great size and quality”*
**Material Quality**4%
*“The backdrop material is ok”*
**Value For Money**4%
*“Good bang for your buck”*
**Correct Contents**3%
*“Perfect 120pcs of Cartoon Ninja Stickers Pack plus an extra 4pcs”*
**Baking**3%
*“Perfect cake plate”*
**Ease Of Use**3%
*“easy to blow up”*
### **What buyers complain about **
**Size-Overall**27%
*“A little small”*
**Inflation/Deflation**13%
*“Deflates”*
**Thickness**8%
*“Its not super long or thick”*
**Strength**6%
*“Not very sturdy”*
**Value For Money**6%
*“With the very high price”*
**Paint Quality**6%
*“A couple of the paints were a bit dried out”*
**Smell**5%
*“The smell went away with a little fresh air”*
**Adhesion/Stickiness**2%
*“The tape it includes isnt too good”*
### **Top return reasons **
**Size-Overall**42%
**Value For Money**11%
**Advertised Vs Actual Product**8%
**Quality-Overall**5%
**Defective Material/Parts**4%
**Color**4%
**Image/Picture Clarity**3%
**Assembly/Installation**3%
**Inflation/Deflation**3%
**Material Quality**3%
## **Common questions**
- **Is ninjago birthday party supplies profitable to sell on Amazon United States?**
- The niche generates $107K/yr across 32 tracked products. 4 of 17 products launched in the last 360 days are still selling. 90-day search growth is +6.9%. Flapen's verdict: Worth a look (56/100).
- **How competitive is the ninjago birthday party supplies niche?**
- 21 brands and 23 sellers compete. The top 5 products take 43% of clicks and top 5 brands hold 59% of demand.
- **What do buyers complain about in ninjago birthday party supplies?**
- Top complaints mined from reviews: Size-Overall, Inflation/Deflation, Thickness. The return rate is 2.5%.
- **When does demand for ninjago birthday party supplies peak?**
- Demand is steady year-round — the busiest month runs 2.2× the quietest.
- **What does it cost to enter the ninjago birthday party supplies niche?**
- Listings span $8.41–$35.33; the average listing price is $17.22 (sweet spot $15–$100). The average incumbent carries 37 reviews — the moat a new listing must climb.
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