fum cores
Worth a lookShows beatable incumbent ratings (3.3★), but brand-locked demand (top 5 brands take 97% of clicks) keeps it on the watch list.
Quality gap
Incredible3.3★avg incumbent rating — lower means beatable quality
Avg price
Incredible$31.26avg listing price — sweet spot $15–$100
Returns
Great1.2%return rate — above 5% kills the launch gate
Review moat
Great214.91avg incumbent reviews — the moat a new listing must climb
Conversion
Great8.4%search→purchase rate — share of searches ending in a sale
Price range
Great$9.24–$120.80cheapest to priciest tracked listing — scored on the share inside $15–$100
Competition
Okay60%top-5 click share — leaders hold, buyers still browse
Market size
Okay$123K$123K/yr · 47K searches
Growth
Bad-7.1%90-day search growth — must beat 0% to launch
Brand share
Bad97%top-5 brand share — brand-locked demand
According to Flapen's Amazon United States niche tracking, fum cores is a $123K/yr Amazon United States market (47K searches/yr). The top 5 brands hold 97% of demand. Demand peaks in Jun. Verdict: Worth a look — 54/100.
Data updated Jul 12, 2026 · scored weekly · How we score niches
fum cores market data
- Units sold / yr
- 3K–4K
- avg 100–250/product
- Revenue / yr
- $94K–$125K
- units × avg price
- Conversion rate
- 8.4%
- Avg BSR
- #347
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 70%
- Out of stock
- 27.2%
- Avg brand age
- 27 months
- Avg seller age
- 194 days
Competition & brand share
The top 5 products take 60% of clicks — established leaders, but buyers still shop beyond them.Brands
7 rising
Sellers
8
Top-5 brand share
97%
Top 20: 100%
Top-5 click share
60%
Top 20: 97%
Open market
1%
- FÜM56%
- VOIOV15%
- Boderi12%
- LAMKHOO11%
- Healfs4%
- Habit Control2%
- Open — no brand owns it (1 brand, 1%)
Demand & seasonality
Weekly Amazon search volume, last 70 weeks — -7.1% search growth over the last 90 days.Peak months: Jun · busiest ÷ quietest = 8.2×
Top fum cores search terms
- fum cores38K/yr
- cores3K/yr
- fum core3K/yr
- fum cores replacement3K/yr
Top fum cores 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 23 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Fm 3 Packs of Plant Based Citrus Cores | Naturally Switch from Bad Habits | 9 Total Cores
FÜM$29.073.7★690 rev
30 Pieces of Plant Based Cores 10 Fruity Flavors to Keep Fresh Breath
VOIOV$36.753.3★3 rev
Fm 3 Packs of Plant Based Cores | Naturally Switch from Bad Habits | 9 Total Cores (Crisp Mint)
FÜM$29.713.7★690 rev
Fm 1 Pack of Plant Based Crisp Mint Cores | Naturally Switch from Bad Habits | 3 Total Cores
FÜM$10.023.9★11 rev
Fm 3 Packs of Plant Based Retro Sweets Cores | Naturally Switch from Bad Habits | 9 Total Cores
FÜM$28.533.7★690 rev
Newest
by launch date30 Pieces of Plant Based Cores 10 Fruity Flavors to Keep Fresh Breath
VOIOV$36.753 rev
Fm 3 Packs of Plant Based Cores | Naturally Switch from Bad Habits | 9 Total Cores (Crisp Mint)
FÜM$29.71690 rev
Fm 1 Pack of Plant Based Crisp Mint Cores | Naturally Switch from Bad Habits | 3 Total Cores
FÜM$10.0211 rev
Replace Bad Habit Flavored Air Necklace with 18pcs Refillable Cores in 6 Flavors Habit Support Refreshing Necklace for Stress Relief Sensory Fidget for Adults - Travel Set (Brown)
LAMKHOO$30.1256 rev
Replace Bad Habit Flavored Air Device with 18pcs Refillable Cores in 6 Flavors Habit Support Refreshing Device for Stress Relief Sensory Fidget for Adults (Beige)
LAMKHOO$49.2513 rev
Trending
90-day click momentum30 Pieces of Plant Based Cores 10 Fruity Flavors to Keep Fresh Breath
VOIOV$36.753.3★
Replace Bad Habit Flavored Air Necklace with 18pcs Refillable Cores in 6 Flavors Habit Support Refreshing Necklace for Stress Relief Sensory Fidget for Adults - Travel Set (Brown)
LAMKHOO$30.122.9★
Replace Bad Habit Flavored Air Necklace with 18pcs Refillable Cores in 6 Flavors Habit Support Refreshing Necklace for Stress Relief Sensory Fidget for Adults - Travel Set (Black)
LAMKHOO$29.622.9★
Fm 3 Packs of Plant Based Cores | Naturally Switch from Bad Habits | 9 Total Cores (Crisp Mint)
FÜM$29.713.7★
Healfs 3 Pack Plant-Based Inhaler Cores | Smokeless Core Refills | Total 9 Cores
Healfs$16.233.2★
What buyers say about fum cores
What buyers praise and complain about, mined from review topics.What buyers love
“Great flavor”
“Cranberry tastes okay”
“Great value for the money”
“The smell was okay”
“Just as expected”
“Great quality and perfect for keeping things feeling clean and minty”
“Super easy to use”
“Great tool for anxiety reduction”
“Great when you cannot vape in public, relieves the tension and anxiety”
“it helps sm w the hand to mouth habit”
What buyers complain about
“Terrible chemical flavor”
“Doesn't taste like mint at all”
“Just gives you a sore throat”
“not worth it”
“not disclosed in the product description”
“They are a little too long”
“its very strong”
“Product is not good”
“the chain broke the first day I got it”
“Caused allergic reaction”
Top return reasons
Common questions
- Is fum cores profitable to sell on Amazon United States?
- The niche generates $123K/yr across 23 tracked products. 2 of 13 products launched in the last 360 days are still selling. 90-day search growth is -7.1%. Flapen's verdict: Worth a look (54/100).
- How competitive is the fum cores niche?
- 7 brands and 8 sellers compete. The top 5 products take 60% of clicks and top 5 brands hold 97% of demand.
- What do buyers complain about in fum cores?
- Top complaints mined from reviews: Flavor, Taste-Overall, Side Effects. The return rate is 1.2%.
- When does demand for fum cores peak?
- Demand peaks in Jun; the busiest month runs 8.2× the quietest.
- What does it cost to enter the fum cores niche?
- Listings span $9.24–$120.80; the average listing price is $31.26 (sweet spot $15–$100). The average incumbent carries 215 reviews — the moat a new listing must climb.