birthday cake protein bars
Launch itA $1.5M/yr market growing +0.1% this quarter with returns at 0.0% — clears our launch bar.
Returns
Incredible0.0%return rate — above 5% kills the launch gate
Avg price
Great$22.52avg listing price — sweet spot $15–$100
Market size
Great$1.5M$1.5M/yr · 769K searches
Conversion
Great8.4%search→purchase rate — share of searches ending in a sale
Price range
Great$5.31–$44.60cheapest to priciest tracked listing — scored on the share inside $15–$100
Competition
Good41%top-5 click share — leaders hold, buyers still browse
Quality gap
Good4.3★avg incumbent rating — lower means beatable quality
Review moat
Okay3,109.36avg incumbent reviews — the moat a new listing must climb
Growth
Okay+0.1%90-day search growth — must beat 0% to launch
Brand share
Bad96%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
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.Peak months: Jul · busiest ÷ quietest = 2.7×
Top birthday cake protein bars search terms
- one protein bars369K/yr
- one bars protein bars86K/yr
- one bars62K/yr
- one bar43K/yr
- protein one bars32K/yr
- one protein bar28K/yr
- birthday cake protein bars22K/yr
- quest birthday cake protein bar25K/yr
- protein one17K/yr
- one protein16K/yr
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.
All 24 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
ONE Protein Bars Reeses Peanut Butter Lovers Gluten Free with 18g Protein and 3g Sugar Pantry Staples 2.12 oz (12 Count)
ONE$23.724.4★2,836 rev
ONE Protein Bars Birthday Cake Gluten Free with 20g Protein and 1g Sugar Pantry Staples 2.12 oz (12 Count)
ONE$26.184.4★5,808 rev
ONE Protein Bars Hersheys Cookies n Creme Gluten Free with 18g Protein and 3g Sugar Pantry Staples 2.12 oz (12 Count)
ONE$22.094.3★632 rev
ONE Protein Bars NEW Hersheys Double Chocolate Gluten Free with 18g Protein and 3g Sugar Pantry Staples 2.12 oz (12 Pack)
ONE$23.704.3★585 rev
ONE Protein Bars Blueberry Cobbler Gluten Free with 20g Protein and 1g Sugar Pantry Staples 2.12 oz (12 Count)
ONE$24.244.5★3,039 rev
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$24.295 rev
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$29.8619 rev
ONE Protein Bars Sampler Variety Pack Gluten Free with 20g Protein and 1g Sugar Pantry Staples 2.12 oz (8 Count)
ONE$24.85208 rev
ONE Protein Bars NEW Hersheys Double Chocolate Gluten Free with 18g Protein and 3g Sugar Pantry Staples 2.12 oz (12 Pack)
ONE$23.70585 rev
Quest Nutrition Crispy Birthday Cake Protein Bar 17g Protein 1g Sugar 2g Net Carbs Gluten Free Protein Snack Keto Friendly 12 Count
Quest$21.29712 rev
Trending
90-day click momentumOne 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$29.864.0★
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$24.293.4★
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$32.144.3★
Quest Nutrition Birthday Cake Protein Bars 20g Protein 4g net Carbs 1g Sugar Gluten Free Keto Friendly 4 Count
Quest$10.264.5★
Protein One Peanut Butter Chocolate Protein Bars GLP-1 Friendly 5 Ct 4.8 oz
Protein One$6.533.6★
What buyers say about birthday cake protein bars
What buyers praise and complain about, mined from review topics.What buyers love
“Yummy snack”
“plenty of protein”
“Great flavor choice”
“Good variety/options”
“Flavor is overly sweet”
“Great value”
“Great consistency”
“Easy to chew”
“Great taste and healthy”
“As shown”
What buyers complain about
“Not tasty”
“Bad flavor”
“This one is not very high-calorie comparing to most”
“Little expensive”
“Plasticy texture”
“Not chewable”
“False advertising”
“Melted mess”
“lost the smooth sweetness”
“Hard as a ROCK”
Top return reasons
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.