fulfill protein bars
Worth a lookShows low returns (0.1%), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Returns
Incredible0.1%return rate — above 5% kills the launch gate
Market size
Great£1.3M£1.3M/yr · 1.1M searches
Avg price
Great£16.55avg listing price — sweet spot $15–$100
Conversion
Great7.2%search→purchase rate — share of searches ending in a sale
Competition
Good51%top-5 click share — leaders hold, buyers still browse
Quality gap
Good4.5★avg incumbent rating — lower means beatable quality
Price range
Okay£2.33–£26.15cheapest to priciest tracked listing — scored on the share inside $15–$100
Review moat
Okay1,986.11avg incumbent reviews — the moat a new listing must climb
Growth
Bad-2.5%90-day search growth — must beat 0% to launch
Brand share
Bad99%top-5 brand share — brand-locked demand
According to Flapen's Amazon United Kingdom niche tracking, fulfill protein bars is a £1.3M/yr Amazon United Kingdom market (1.1M searches/yr). The top 5 brands hold 99% of demand. Demand peaks in Jun–Jul. Verdict: Worth a look — 56/100.
Data updated Jul 24, 2026 · scored weekly · How we score niches
fulfill protein bars market data
- Units sold / yr
- 125K–150K
- avg 4,000–5,000/product
- Revenue / yr
- £2.1M–£2.5M
- units × avg price
- Conversion rate
- 7.2%
- Avg BSR
- #30
- Page quality
- 0%
- Prime
- 89%
- Sponsored
- 63%
- Out of stock
- 2.6%
- Avg brand age
- 53 months
- Avg seller age
- 160 days
Competition & brand share
The top 5 products take 51% of clicks — established leaders, but buyers still shop beyond them.Brands
6 falling
Sellers
116
Top-5 brand share
99%
Top 20: 100%
Top-5 click share
51%
Top 20: 92%
Open market
0%
- Grenade80%
- Fulfil14%
- Warrior3%
- Grenade Carb Killa2%
- Snickers1%
- Chiefs1%
- Open — no brand owns it (0%)
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — -2.5% search growth over the last 90 days.Peak months: Jun, Jul · busiest ÷ quietest = 8.6×
Top fulfill protein bars search terms
- grenade protein bars646K/yr
- fulfil protein bars114K/yr
- grenade114K/yr
- grenade bars76K/yr
- protein bars grenade22K/yr
- fulfill protein bars23K/yr
- grenade bar17K/yr
- fulfil17K/yr
- grenade protein17K/yr
- grenade bars protein10K/yr
Top fulfill 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
Grenade High Protein Low Sugar Bar - Chocolate Chip Salted Caramel 12 x 60 g
Grenade£16.114.6★3,992 rev
Grenade OREO White - High Protein Low Sugar Bars 12 x 60 g
Grenade£14.134.5★1,993 rev
FULFIL Vitamin and Protein Bars Chocolate Salted Caramel Flavour 15 x 55g
Fulfil£21.064.7★1,961 rev
Grenade OREO - High Protein Low Sugar Bars 12 x 60 g
Grenade£14.544.4★4,005 rev
Grenade Limited Edition Creme Egg Flavour Soft Core Protein Bar - High Protein Low Sugar 18 x 45 g
Grenade£18.054.4★304 rev
Newest
by launch dateGrenade Limited Edition Creme Egg Flavour Soft Core Protein Bar - High Protein Low Sugar 18 x 45 g
Grenade£18.05304 rev
Snickers HiProtein Bars Dark Chocolate 20g Protein Only 1g Sugar 12×57g Multipack Low Sugar High Protein Snack
Snickers£17.86200 rev
Grenade High Protein Low Sugar Bar - Fan Favourites Selection Box Protein Bars 10 x 60 g (Packaging May Vary)
Grenade£14.62188 rev
Grenade OREO White - High Protein Low Sugar Bars 12 x 60 g
Grenade£14.131,993 rev
Grenade Protein Bar - Pick any 12 Protein Bars from Birthday Cake Cookie Dough Salted Caramel Fudged up Peanut Nutter Salted Peanut Dark Chocolate Mint & More. High Protein & Fibre and Low Sugar
Grenade Carb Killa£26.1564 rev
Trending
90-day click momentumGrenade Protein Bar - Pick any 12 Protein Bars from Birthday Cake Cookie Dough Salted Caramel Fudged up Peanut Nutter Salted Peanut Dark Chocolate Mint & More. High Protein & Fibre and Low Sugar
Grenade Carb Killa£26.154.6★
Warrior RAW Protein Bars 12 x 75g 20g High Protein Bar Low Sugar High Fibre Oat Protein Flapjack Protein Snacks Meal Replacement Bars (Chocolate Brownie)
Warrior£9.313.9★
Grenade High Protein Low Sugar Bar - Fan Favourites Selection Box Protein Bars 10 x 60 g (Packaging May Vary)
Grenade£14.624.5★
Grenade Limited Edition Creme Egg Flavour Soft Core Protein Bar - High Protein Low Sugar 18 x 45 g
Grenade£18.054.4★
Grenade Selection Box - High Protein Low Sugar Bars 12 x 60 g Variety Pack (Packaging & Flavours May Vary)
Grenade£16.304.6★
What buyers say about fulfill protein bars
What buyers praise and complain about, mined from review topics.What buyers love
“Absolutely delicious”
“Great Protein Bars”
“Value for the money”
“Great tasting bars”
“Great value for the quality”
“Really nice sweet”
“What I love most is the consistency”
“Good size”
“Best to avoid for diabetics”
“Great when Im trying to lose weight”
What buyers complain about
“Soap taste”
“More expensive for less”
“Not mentioned anywhere in the advertising”
“taste is slightly chalky”
“Sickly sweet”
“what you fail to mention is the 9.4gr of saturated fat”
“texture is off”
“I nearly purchased this without realised that it contained Halal bovine collagen”
“they are really dry and chewy”
“it's a struggle to swallow it”
Top return reasons
Common questions
- Is fulfill protein bars profitable to sell on Amazon United Kingdom?
- The niche generates £1.3M/yr across 27 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is -2.5%. Flapen's verdict: Worth a look (56/100).
- How competitive is the fulfill protein bars niche?
- 6 brands and 116 sellers compete. The top 5 products take 51% of clicks and top 5 brands hold 99% of demand.
- What do buyers complain about in fulfill protein bars?
- Top complaints mined from reviews: Taste-Overall, Value For Money, Advertised Vs Actual Product. The return rate is 0.1%.
- When does demand for fulfill protein bars peak?
- Demand peaks in Jun–Jul; the busiest month runs 8.6× the quietest.
- What does it cost to enter the fulfill protein bars niche?
- Listings span £2.33–£26.15; the average listing price is £16.55 (sweet spot $15–$100). The average incumbent carries 1,986 reviews — the moat a new listing must climb.