---
title: "Birthday Cake Protein Bars — $1.5M/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/health-household/birthday-cake-protein-bars"
last_updated: "2026-08-10T00:14:19.218Z"
locale: en
meta:
description: "Niche score 64/100 · $1.5M/yr market · 769K searches/yr · $22.52 avg price. Clears our launch bar. Data updated Jul 2026."
"og:description": "Niche score 64/100 · $1.5M/yr market · 769K searches/yr · $22.52 avg price. Clears our launch bar. Data updated Jul 2026."
"og:title": "Birthday Cake Protein Bars — $1.5M/yr Amazon US Niche (2026) - Flapen"
---
# **birthday cake protein bars**
**Launch it**
A $1.5M/yr market growing +0.1% this quarter with returns at 0.0% — clears our launch bar.
Market size 86Growth 25Conversion 81Competition 73Returns 100Price range 75Avg price 94Brand share 9Review moat 34Quality gap 73
**Returns**
**Incredible****0.0%**
return rate — above 5% kills the launch gate
**Avg price**
**Great****$22.52**
avg listing price — sweet spot $15–$100
**Market size**
**Great****$1.5M**
$1.5M/yr · 769K searches
**Conversion**
**Great****8.4%**
search→purchase rate — share of searches ending in a sale
**Price range**
**Great****$5.31–$44.60**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Competition**
**Good****41%**
top-5 click share — leaders hold, buyers still browse
**Quality gap**
**Good****4.3★**
avg incumbent rating — lower means beatable quality
**Review moat**
**Okay****3,109.36**
avg incumbent reviews — the moat a new listing must climb
**Growth**
**Okay****+0.1%**
90-day search growth — must beat 0% to launch
**Brand share**
**Bad****96%**
top-5 brand share — brand-locked demand
According to Flapen's Amazon United States niche tracking, birthday cake protein bars is a $1.5M/yr Amazon United States market (769K searches/yr). The top 5 brands hold 96% of demand. Demand peaks in Jul. Verdict: Launch it — 64/100.
Data updated Jul 8, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **birthday cake protein bars market data**
- **Units sold / yr**
- **80K–100K**
- avg 2,000–2,500/product
- **Revenue / yr**
- **$1.8M–$2.3M**
- units × avg price
- **Conversion rate**
- **8.4%**
- **Avg BSR**
- **#102**
- **Page quality**
- **0%**
- **Prime**
- **94%**
- **Sponsored**
- **88%**
- **Out of stock**
- **6.3%**
- **Avg brand age**
- **69 months**
- **Avg seller age**
- **125 days**
## **Competition & brand share**
The top 5 products take 41% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**8 **▲rising
**Sellers**
**77**
**Top-5 brand share**
**96%**
Top 20: 100%
**Top-5 click share**
**41%**
Top 20: 89%
**Open market**
**2%**
- ONE73% - Quest12% - Avama6% - Protein One4% - Pure Protein2% - Generic2% - Open — no brand owns it (2 brands, 2%)
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — +0.1% search growth over the last 90 days.
10K6KSpike '24Spike '25Prime Day '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Jul · busiest ÷ quietest = 2.7×
[**Open Trend **](https://flapen.com/research/us/health-household/birthday-cake-protein-bars/trend)
## **Top birthday cake protein bars search terms**
- **one protein bars**369K/yr-5.0%8.7% conv. - **one bars protein bars**86K/yr+9.6%10.6% conv. - **one bars**62K/yr-5.1%12.1% conv. - **one bar**43K/yr+0.4%9.1% conv. - **protein one bars**32K/yr+28.3%8.0% conv. - **one protein bar**28K/yr-12.5%6.3% conv. - **birthday cake protein bars**22K/yr+6.1%6.8% conv. - **quest birthday cake protein bar**25K/yr+6.0%14.8% conv. - **protein one**17K/yr+19.2%4.6% conv. - **one protein**16K/yr+7.3%6.0% conv. [**All search terms **](https://flapen.com/research/us/health-household/birthday-cake-protein-bars/search-terms)
## **Top birthday cake protein bars 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%$44K6%$87K9%$131K12%$174K1101001K10K100K 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**ONE Protein Bars Reeses Peanut Butter Lovers Gluten Free with 18g Protein and 3g Sugar Pantry Staples 2.12 oz (12 Count)**ONE**$23.72**4.4★2,836 rev](https://www.amazon.com/dp/B0CVNCJKJJ) [2**ONE Protein Bars Birthday Cake Gluten Free with 20g Protein and 1g Sugar Pantry Staples 2.12 oz (12 Count)**ONE**$26.18**4.4★5,808 rev](https://www.amazon.com/dp/B0171F2HL6) [3**ONE Protein Bars Hersheys Cookies n Creme Gluten Free with 18g Protein and 3g Sugar Pantry Staples 2.12 oz (12 Count)**ONE**$22.09**4.3★632 rev](https://www.amazon.com/dp/B0CVNFNMJ2) [4**ONE Protein Bars NEW Hersheys Double Chocolate Gluten Free with 18g Protein and 3g Sugar Pantry Staples 2.12 oz (12 Pack)**ONE**$23.70**4.3★585 rev](https://www.amazon.com/dp/B0DW9DKBL2) [5**ONE Protein Bars Blueberry Cobbler Gluten Free with 20g Protein and 1g Sugar Pantry Staples 2.12 oz (12 Count)**ONE**$24.24**4.5★3,039 rev](https://www.amazon.com/dp/B01N183BAD)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**One Protein Bar Sampler Variety Pack - 8 Assorted Flavors - 2.12 Oz Bars - Gluten-Free Protein Bar with High Protein 18-20g - Low Sugar - 8 Pack**Generic**$24.29**5 rev2mo ago](https://www.amazon.com/dp/B0GZQ7P4G8) [**One Protein Bar Variety Pack 10 Assorted Flavors - 2.12 Oz Bars Gluten-Free Protein Bar with High Protein (18-20g) and Low Sugar (1g) 10 Pack**Avama**$29.86**19 rev10mo ago](https://www.amazon.com/dp/B0FN7M4G1M) [**ONE Protein Bars Sampler Variety Pack Gluten Free with 20g Protein and 1g Sugar Pantry Staples 2.12 oz (8 Count)**ONE**$24.85**208 rev1y ago](https://www.amazon.com/dp/B0DYKB99VP) [**ONE Protein Bars NEW Hersheys Double Chocolate Gluten Free with 18g Protein and 3g Sugar Pantry Staples 2.12 oz (12 Pack)**ONE**$23.70**585 rev1y ago](https://www.amazon.com/dp/B0DW9DKBL2) [**Quest Nutrition Crispy Birthday Cake Protein Bar 17g Protein 1g Sugar 2g Net Carbs Gluten Free Protein Snack Keto Friendly 12 Count**Quest**$21.29**712 rev1y ago](https://www.amazon.com/dp/B0D9HXHR8J)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**One Protein Bar Variety Pack 10 Assorted Flavors - 2.12 Oz Bars Gluten-Free Protein Bar with High Protein (18-20g) and Low Sugar (1g) 10 Pack**Avama**$29.86**4.0★**▲ 253%**](https://www.amazon.com/dp/B0FN7M4G1M) [**One Protein Bar Sampler Variety Pack - 8 Assorted Flavors - 2.12 Oz Bars - Gluten-Free Protein Bar with High Protein 18-20g - Low Sugar - 8 Pack**Generic**$24.29**3.4★**▲ 251%**](https://www.amazon.com/dp/B0GZQ7P4G8) [**ONE Protein Bars Best Sellers Variety Pack Gluten Free Protein Bars with 20g Protein and 1g Sugar Pantry Staples 2.12 oz (12 Count)**ONE**$32.14**4.3★**▲ 50%**](https://www.amazon.com/dp/B06XG345H8) [**Quest Nutrition Birthday Cake Protein Bars 20g Protein 4g net Carbs 1g Sugar Gluten Free Keto Friendly 4 Count**Quest**$10.26**4.5★**▲ 39%**](https://www.amazon.com/dp/B07VGS9673) [**Protein One Peanut Butter Chocolate Protein Bars GLP-1 Friendly 5 Ct 4.8 oz**Protein One**$6.53**3.6★**▲ 37%**](https://www.amazon.com/dp/B07B9WB1DX)
**~~View all trending →~~**
## **What buyers say about birthday cake protein bars**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Taste-Overall**35%
*“Yummy snack”*
**Nutritional Content**18%
*“plenty of protein”*
**Flavor**14%
*“Great flavor choice”*
**Quality-Overall**4%
*“Good variety/options”*
**Sweetness**3%
*“Flavor is overly sweet”*
**Value For Money**2%
*“Great value”*
**Texture/Consistency-Overall**2%
*“Great consistency”*
**Ease Of Chewing/Swallowing**1%
*“Easy to chew”*
**Health Benefits-Overall**1%
*“Great taste and healthy”*
**Advertised Vs Actual Product**1%
*“As shown”*
### **What buyers complain about **
**Taste-Overall**21%
*“Not tasty”*
**Flavor**9%
*“Bad flavor”*
**Nutritional Content**7%
*“This one is not very high-calorie comparing to most”*
**Value For Money**6%
*“Little expensive”*
**Texture/Consistency-Overall**5%
*“Plasticy texture”*
**Ease Of Chewing/Swallowing**3%
*“Not chewable”*
**Advertised Vs Actual Product**3%
*“False advertising”*
**Storage Temperature**3%
*“Melted mess”*
**Sweetness**3%
*“lost the smooth sweetness”*
**Hard Feel**2%
*“Hard as a ROCK”*
### **Top return reasons **
**Taste-Overall**31%
**Flavor**16%
**Ingredients-Overall**7%
**Hard Feel**5%
**Nutritional Content**4%
**Advertised Vs Actual Product**4%
**Ease Of Chewing/Swallowing**4%
**Stale/Rotten/Spoiled**4%
**Smell**3%
**Value For Money**3%
## **Common questions**
- **Is birthday cake protein bars profitable to sell on Amazon United States?**
- The niche generates $1.5M/yr across 33 tracked products. 3 of 3 products launched in the last 360 days are still selling. 90-day search growth is +0.1%. Flapen's verdict: Launch it (64/100).
- **How competitive is the birthday cake protein bars niche?**
- 8 brands and 77 sellers compete. The top 5 products take 41% of clicks and top 5 brands hold 96% of demand.
- **What do buyers complain about in birthday cake protein bars?**
- Top complaints mined from reviews: Taste-Overall, Flavor, Nutritional Content. The return rate is 0.0%.
- **When does demand for birthday cake protein bars peak?**
- Demand peaks in Jul; the busiest month runs 2.7× the quietest.
- **What does it cost to enter the birthday cake protein bars niche?**
- Listings span $5.31–$44.60; the average listing price is $22.52 (sweet spot $15–$100). The average incumbent carries 3,109 reviews — the moat a new listing must climb.
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