k6 grinder
Skip itBrand-locked demand (top 5 brands take 100% of clicks) — this niche doesn't clear our bar today.
Review moat
Great385.43avg incumbent reviews — the moat a new listing must climb
Returns
Good2.4%return rate — above 5% kills the launch gate
Avg price
Okay$197.47avg listing price — sweet spot $15–$100
Conversion
Okay3.4%search→purchase rate — share of searches ending in a sale
Market size
Okay$192K$192K/yr · 29K searches
Growth
Bad-2.0%90-day search growth — must beat 0% to launch
Quality gap
Bad4.6★avg incumbent rating — lower means beatable quality
Price range
Bad$23.27–$876.72cheapest to priciest tracked listing — scored on the share inside $15–$100
Competition
Bad95%top-5 click share — a locked-up shelf
Brand share
Bad100%top-5 brand share — brand-locked demand
According to Flapen's Amazon United States niche tracking, k6 grinder is a $192K/yr Amazon United States market (29K searches/yr). The top 5 brands hold 100% of demand. Demand peaks in Jan–Nov–Dec. Verdict: Skip it — 30/100.
Data updated Aug 4, 2026 · scored weekly · How we score niches
k6 grinder market data
- Units sold / yr
- 1K–1K
- avg 100–250/product
- Revenue / yr
- $197K–$247K
- units × avg price
- Conversion rate
- 3.4%
- Avg BSR
- #34
- Page quality
- 0%
- Prime
- 86%
- Sponsored
- 71%
- Out of stock
- 38.5%
- Avg brand age
- 34 months
- Avg seller age
- 190 days
Competition & brand share
The top 5 products capture 95% of clicks — a locked-up shelf that new listings rarely crack.Brands
2 rising
Sellers
4
Top-5 brand share
100%
Top 20: 100%
Top-5 click share
95%
Top 20: 100%
Open market
0%
- KINGrinder97%
- Mikolo3%
Demand & seasonality
Weekly Amazon search volume, last 71 weeks — -2.0% search growth over the last 90 days.Peak months: Jan, Nov, Dec · busiest ÷ quietest = 2.1×
Top k6 grinder 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 7 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
GrayKINGrinder K6 Manual Coffee Grinder Straight Handle Stainless Burr
KINGrinder$100.504.6★905 rev
SliverKINGrinder K6 Manual Coffee Grinder Straight Handle Stainless Burr
KINGrinder$106.404.6★905 rev
KINGrinder P2 Lightweight Manual Coffee Grinder ABS Body Stainless Burr
KINGrinder$46.004.6★348 rev
SliverKINGrinder K2 Manual Coffee Grinder Straight Handle Stainless Burr
KINGrinder$85.154.7★141 rev
KINGrinder K7 Manual Coffee Grinder Bent Handle Stainless Burr
KINGrinder$144.284.8★23 rev
Newest
by launch date
Mikolo K6 2.0 Power Cage with Weight Stack 2000LB Heavy Duty Power Rack & Cable Crossover Machine Multi-Functional Trainer Home Gym with LAT Pulldown & Aluminum Pulleys Black
Mikolo$876.7243 rev
SliverKINGrinder K2 Manual Coffee Grinder Straight Handle Stainless Burr
KINGrinder$85.15141 rev
KINGrinder K7 Manual Coffee Grinder Bent Handle Stainless Burr
KINGrinder$144.2823 rev
SliverKINGrinder K6 Manual Coffee Grinder Straight Handle Stainless Burr
KINGrinder$106.40905 rev
GrayKINGrinder K6 Manual Coffee Grinder Straight Handle Stainless Burr
KINGrinder$100.50905 rev
Trending
90-day click momentumSliverKINGrinder K6 Manual Coffee Grinder Straight Handle Stainless Burr
KINGrinder$106.404.6★
Mikolo K6 2.0 Power Cage with Weight Stack 2000LB Heavy Duty Power Rack & Cable Crossover Machine Multi-Functional Trainer Home Gym with LAT Pulldown & Aluminum Pulleys Black
Mikolo$876.724.2★
SliverKINGrinder K2 Manual Coffee Grinder Straight Handle Stainless Burr
KINGrinder$85.154.7★
KINGrinder K7 Manual Coffee Grinder Bent Handle Stainless Burr
KINGrinder$144.284.8★
KINGrinder P2 Lightweight Manual Coffee Grinder ABS Body Stainless Burr
KINGrinder$46.004.6★
What buyers say about k6 grinder
What buyers praise and complain about, mined from review topics.What buyers love
“Decent build quality”
“Good value”
“Easy to use”
“its very adjustable”
“Solid grinder”
“Super fast grinding, nice and light”
“Easy to clean”
“As expected”
“Great Grinder”
“Works well for my use as a budget grinder for ~ 2 cups of brewed coffee per use”
What buyers complain about
“found it to be sort of a pain to use”
“manuals are not very detailed”
“It completely jammed after 1 month of normal and correct use”
“Has quality issues after 1 year use”
“slightly lack in clarity”
“This feels like it could have cost more than it did”
“Plastic not super durable”
“Extremely messy to use”
“Rust issue, disassemble weekly”
“Adjustment mechanism breaks easily”
Top return reasons
Common questions
- Is k6 grinder profitable to sell on Amazon United States?
- The niche generates $192K/yr across 7 tracked products. 3 of 3 products launched in the last 360 days are still selling. 90-day search growth is -2.0%. Flapen's verdict: Skip it (30/100).
- How competitive is the k6 grinder niche?
- 2 brands and 4 sellers compete. The top 5 products take 95% of clicks and top 5 brands hold 100% of demand.
- What do buyers complain about in k6 grinder?
- Top complaints mined from reviews: Ease Of Use, Instructions/User Manual/Troubleshooting, Jamming/Clogging. The return rate is 2.4%.
- When does demand for k6 grinder peak?
- Demand peaks in Jan–Nov–Dec; the busiest month runs 2.1× the quietest.
- What does it cost to enter the k6 grinder niche?
- Listings span $23.27–$876.72; the average listing price is $197.47 (sweet spot $15–$100). The average incumbent carries 385 reviews — the moat a new listing must climb.