---
title: "Transformers Birthday Party Supplies — $426K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/home-kitchen/transformers-birthday-party-supplies"
last_updated: "2026-08-09T13:12:13.557Z"
locale: en
meta:
description: "Niche score 56/100 · $426K/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 · $426K/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Transformers Birthday Party Supplies — $426K/yr Amazon US Niche (2026) - Flapen"
---
# **transformers birthday party supplies**
**Worth a look**
Shows a sweet-spot price point ($20.08 avg), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Market size 57Growth 17Conversion 54Competition 83Returns 69Price range 85Avg price 88Brand share 43Review moat 84Quality gap 32
**Avg price**
**Great****$20.08**
avg listing price — sweet spot $15–$100
**Price range**
**Great****$5.93–$78.61**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Review moat**
**Great****315.5**
avg incumbent reviews — the moat a new listing must climb
**Competition**
**Great****32%**
top-5 click share — an open shelf
**Returns**
**Good****2.2%**
return rate — above 5% kills the launch gate
**Market size**
**Good****$426K**
$426K/yr · 478K searches
**Conversion**
**Good****4.4%**
search→purchase rate — share of searches ending in a sale
**Brand share**
**Okay****79%**
top-5 brand share — brands hold most of the demand
**Quality gap**
**Okay****4.6★**
avg incumbent rating — lower means beatable quality
**Growth**
**Bad****-16.0%**
90-day search growth — must beat 0% to launch
According to Flapen's Amazon United States niche tracking, transformers birthday party supplies is a $426K/yr Amazon United States market (478K searches/yr). The top 5 brands hold 79% of demand. Demand peaks in Jan. Verdict: Worth a look — 56/100.
Data updated Jul 23, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **transformers birthday party supplies market data**
- **Units sold / yr**
- **15K–20K**
- avg 250–500/product
- **Revenue / yr**
- **$301K–$402K**
- units × avg price
- **Conversion rate**
- **4.4%**
- **Avg BSR**
- **#2,209**
- **Page quality**
- **0%**
- **Prime**
- **98%**
- **Sponsored**
- **83%**
- **Out of stock**
- **10.2%**
- **Avg brand age**
- **33 months**
- **Avg seller age**
- **146 days**
## **Competition & brand share**
Clicks spread well past the top 5 (32% combined) — an open shelf where new products get seen.
**Brands**
**19 **▲rising
**Sellers**
**35**
**Top-5 brand share**
**79%**
Top 20: 100%
**Top-5 click share**
**32%**
Top 20: 76%
**Open market**
**16%**
- Treasures Gifted22% - Unique22% - Transformers20% - Seyal8% - Anagram7% - Bestbase5% - Open — no brand owns it (13 brands, 16%)
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -16.0% search growth over the last 90 days.
18K13KSpike '24Spike '25Prime Day '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Jan · busiest ÷ quietest = 1.8×
[**Open Trend **](https://flapen.com/research/us/home-kitchen/transformers-birthday-party-supplies/trend)
## **Top transformers birthday party supplies search terms**
- **transformers birthday decorations**180K/yr-1.8%2.6% conv. - **transformer birthday decorations**54K/yr-28.4%2.1% conv. - **transformers party decorations**50K/yr-15.7%2.3% conv. - **transformers birthday**24K/yr-7.9%1.8% conv. - **transformer party decorations**23K/yr-27.6%2.5% conv. - **transformers party supplies**15K/yr-24.6%3.3% conv. - **transformer birthday**13K/yr-17.4%2.2% conv. - **transformers decorations**11K/yr+0.7%2.8% conv. - **transformers party**12K/yr-18.0%1.6% conv. - **transformers birthday banner**11K/yr-26.0%4.5% conv. [**All search terms **](https://flapen.com/research/us/home-kitchen/transformers-birthday-party-supplies/search-terms)
## **Top transformers 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%2%$9K4%$17K6%$26K8%$34K1101001K 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**Treasures Gifted Transformers Backdrop 4.25ft Tall x 6ft Wide - Transformers Party Decorations - Transformers Birthday Banner - Transformers Party Supplies - Transformers Birthday Backdrop**Treasures Gifted**$26.50**4.6★184 rev](https://www.amazon.com/dp/B0BSJPFFJD) [2**Transformers Birthday Party Supplies | Serves 16 Guests | Transformers Party Supplies | Transformer Dinner & Cake Plates Napkins Tablecover Button | Officially Licensed**Unique**$23.90**4.7★318 rev](https://www.amazon.com/dp/B0C46XJTH5) [3**Transformers Optimus Prime Birthday Boys Short Sleeve T-Shirt for Big Kids Black**Transformers**$16.96**4.9★53 rev](https://www.amazon.com/dp/B0DV5R5L6B) [4**Optms Prme Happy Birthday Banner Decoration Transformers-Themed Party Garland Featuring Bold Robot Designs & Bright Colors Fun Supplies for Birthdays Celebrations & Fan Events**Seyal**$9.70**4.2★8 rev](https://www.amazon.com/dp/B0F32C7DNS) [5**Transformers Birthday Decorations for Birthday Party | Tablecloth 16 Plates 16 Napkins | Officially Licensed**Unique**$19.88**4.9★39 rev](https://www.amazon.com/dp/B0FSBJVZKY)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Cartoon Robots Birthday Decoration Cartoon Trans of formers Theme Banner Swirls Centerpieces Latex Balloons for Anime Party Supplies Baby Shower**PINUO**$11.96**0 rev2mo ago](https://www.amazon.com/dp/B0GYLCJ8VW) [**Bumblebee Birthday Decorations Cartoon Robot Backdrops for Party Decorations Supplies Anime Happy Birthday Banner Backdrop for Party Supplies (5x3ft)**karg**$14.77**6 rev5mo ago](https://www.amazon.com/dp/B0GK6FQXYM) [**8Pcs Cartoon For Robot Honeycomb Table Centerpiece Birthday Party Supplies Table Decorations for Kids Party Decorations.**FFGJA**$17.77**3 rev5mo ago](https://www.amazon.com/dp/B0GJZZY9NF) [**Cartoon For Robot Party Supplies Birthday Decorations Set Include Banner Balloons Hanging Swirls Cake Cupcake Toppers for Boys Girls Party.**FFGJA**$20.77**4 rev5mo ago](https://www.amazon.com/dp/B0GJNXD5KQ) [**Cartoon Robot Birthday Party Decorations Transformerr Banner Cartoon Theme Party Decorations for Boys Indoor Outdoor Birthday Party Supplies Backdrop 5*3FT)**picidae**$15.33**20 rev6mo ago](https://www.amazon.com/dp/B0GHP264DF)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Cartoon Robots Birthday Decoration Cartoon Trans of formers Theme Banner Swirls Centerpieces Latex Balloons for Anime Party Supplies Baby Shower**PINUO**$11.96**0.0★**▲ 294%**](https://www.amazon.com/dp/B0GYLCJ8VW) [**Bumblebee Birthday Decorations Cartoon Robot Backdrops for Party Decorations Supplies Anime Happy Birthday Banner Backdrop for Party Supplies (5x3ft)**karg**$14.77**4.8★**▲ 245%**](https://www.amazon.com/dp/B0GK6FQXYM) [**TRANSFORMERS Boys Jersey Tank Top Shirt and Mesh Short Set for Toddler and Big Kids**Transformers**$22.76**4.6★**▲ 241%**](https://www.amazon.com/dp/B0DT7FX5FY) [**Treasures Gifted Officially Licensed Transformers Party Supplies - Serves 16 Guests - Dinnerware Deluxe Set - Transformers Plates Napkins Cups & Tablecloth**Treasures Gifted**$38.94**4.6★**▲ 190%**](https://www.amazon.com/dp/B0BSJMY1WC) [**Transformers Optimus Prime Birthday Boys Short Sleeve T-Shirt for Big Kids Black**Transformers**$16.96**4.9★**▲ 155%**](https://www.amazon.com/dp/B0DV5R5L6B)
**~~View all trending →~~**
## **What buyers say about transformers birthday party supplies**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**20%
*“Good quality and arrived quickly”*
**Size-Overall**13%
*“Sizes were great”*
**Advertised Vs Actual Product**10%
*“The backdrop was exactly as described”*
**Value For Money**10%
*“Great value”*
**Fun/Entertainment Experience**9%
*“He had a great deal of fun with them”*
**Gifting Purpose**7%
*“Good as a gift”*
**Design-Overall**6%
*“Nice Design”*
**Ease Of Use**3%
*“it's very easy to do”*
**Collectibles**3%
*“Ideal prizes”*
**Inflation/Deflation**3%
*“Great quality easy to inflate”*
### **What buyers complain about **
**Size-Overall**20%
*“So small”*
**Quality-Overall**19%
*“I would not have paid more than $2.99 if I knew the CHEAP quality of this cake topper”*
**Advertised Vs Actual Product**19%
*“False advertisement”*
**Durability**11%
*“Fell apart easy so my kid lost interest which was a bummer”*
**Print Quality**7%
*“That the banner was not spelled right”*
**Assembly/Installation**5%
*“Too many instructions”*
**Strength**3%
*“It's flimsy paper”*
**Value For Money**3%
*“not worth the price”*
**Comfort-Overall**2%
*“I didnt feel comfortable opening it”*
**Brightness/Shine/Glow**2%
*“No Glitter”*
### **Top return reasons **
**Size-Overall**36%
**Advertised Vs Actual Product**22%
**Value For Money**12%
**Quality-Overall**6%
**Material Quality**3%
**Adhesion/Stickiness**2%
**Color**2%
**Assembly/Installation**2%
**Instructions/User Manual/Troubleshooting**2%
**Strength**1%
## **Common questions**
- **Is transformers birthday party supplies profitable to sell on Amazon United States?**
- The niche generates $426K/yr across 52 tracked products. 3 of 15 products launched in the last 360 days are still selling. 90-day search growth is -16.0%. Flapen's verdict: Worth a look (56/100).
- **How competitive is the transformers birthday party supplies niche?**
- 19 brands and 35 sellers compete. The top 5 products take 32% of clicks and top 5 brands hold 79% of demand.
- **What do buyers complain about in transformers birthday party supplies?**
- Top complaints mined from reviews: Size-Overall, Quality-Overall, Advertised Vs Actual Product. The return rate is 2.2%.
- **When does demand for transformers birthday party supplies peak?**
- Demand peaks in Jan; the busiest month runs 1.8× the quietest.
- **What does it cost to enter the transformers birthday party supplies niche?**
- Listings span $5.93–$78.61; the average listing price is $20.08 (sweet spot $15–$100). The average incumbent carries 316 reviews — the moat a new listing must climb.
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