---
title: "Kingrinder — $122K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/home-kitchen/kingrinder"
last_updated: "2026-08-10T19:12:51.201Z"
locale: en
meta:
description: "Niche score 32/100 · $122K/yr market · 91K searches/yr · $75.30 avg price. Doesn't clear our bar today. Data updated Aug 2026."
"og:description": "Niche score 32/100 · $122K/yr market · 91K searches/yr · $75.30 avg price. Doesn't clear our bar today. Data updated Aug 2026."
"og:title": "Kingrinder — $122K/yr Amazon US Niche (2026) - Flapen"
---
# **kingrinder**
**Skip it**
Brand-locked demand (top 5 brands take 100% of clicks) — this niche doesn't clear our bar today.
Market size 28Growth 21Conversion 22Competition 16Returns 64Price range 63Avg price 84Brand share 0Review moat 79Quality gap 21
**Avg price**
**Great****$75.30**
avg listing price — sweet spot $15–$100
**Review moat**
**Great****414.78**
avg incumbent reviews — the moat a new listing must climb
**Returns**
**Good****2.5%**
return rate — above 5% kills the launch gate
**Price range**
**Good****$23.27–$144.28**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Market size**
**Okay****$122K**
$122K/yr · 91K searches
**Conversion**
**Bad****1.8%**
search→purchase rate — share of searches ending in a sale
**Growth**
**Bad****-8.8%**
90-day search growth — must beat 0% to launch
**Quality gap**
**Bad****4.7★**
avg incumbent rating — lower means beatable quality
**Competition**
**Bad****81%**
top-5 click share — a locked-up shelf
**Brand share**
**Bad****100%**
top-5 brand share — brand-locked demand
**Signals**[** High Price**](https://flapen.com/research/niches?market=us&signal=high_price "Avg price > $50") [** Out of Stock**](https://flapen.com/research/niches?market=us&signal=out_of_stock "OOS rate > 10%")
According to Flapen's Amazon United States niche tracking, kingrinder is a $122K/yr Amazon United States market (91K searches/yr). The top 5 brands hold 100% of demand. Demand peaks in Jan–Dec. Verdict: Skip it — 32/100.
Data updated Aug 4, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **kingrinder market data**
- **Units sold / yr**
- **2K–3K**
- avg 250–500/product
- **Revenue / yr**
- **$151K–$188K**
- units × avg price
- **Conversion rate**
- **1.8%**
- **Avg BSR**
- **#32**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **67%**
- **Out of stock**
- **30.8%**
- **Avg brand age**
- **35 months**
- **Avg seller age**
- **181 days**
## **Competition & brand share**
The top 5 products capture 81% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**3 **▲rising
**Sellers**
**5**
**Top-5 brand share**
**100%**
Top 20: 100%
**Top-5 click share**
**81%**
Top 20: 100%
**Open market**
**0%**
- KINGrinder95% - CEVING3% - TIMEMORE1%
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -8.8% search growth over the last 90 days.
3K2KSpike '24Holiday '24Prime Day '25Spike '25Black Friday '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Jan, Dec · busiest ÷ quietest = 1.8×
[**Open Trend **](https://flapen.com/research/us/home-kitchen/kingrinder/trend)
## **Top kingrinder search terms**
- **kingrinder**71K/yr-6.3%2.5% conv. - **king grinder**10K/yr-12.3%1.6% conv. - **kingrinder k4**11K/yr-25.3%2.1% conv. [**All search terms **](https://flapen.com/research/us/home-kitchen/kingrinder/search-terms)
## **Top kingrinder 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%10%$12K20%$24K30%$37K40%$49K101001K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 9 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**KINGrinder P2 Lightweight Manual Coffee Grinder ABS Body Stainless Burr**KINGrinder**$46.00**4.6★348 rev](https://www.amazon.com/dp/B0CMPSFHV8) [2**GrayKINGrinder K6 Manual Coffee Grinder Straight Handle Stainless Burr**KINGrinder**$100.50**4.6★905 rev](https://www.amazon.com/dp/B0CY1XFXB8) [3**SliverKINGrinder K6 Manual Coffee Grinder Straight Handle Stainless Burr**KINGrinder**$106.40**4.6★905 rev](https://www.amazon.com/dp/B0GKFDZ725) [4**KINGrinder P0 Lightweight Manual Coffee Grinder ABS Body Stainless Burr**KINGrinder**$23.27**4.8★333 rev](https://www.amazon.com/dp/B0CMPT7J26) [5**SliverKINGrinder K2 Manual Coffee Grinder Straight Handle Stainless Burr**KINGrinder**$85.15**4.7★141 rev](https://www.amazon.com/dp/B0GHWFTRKG)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**SliverKINGrinder K2 Manual Coffee Grinder Straight Handle Stainless Burr**KINGrinder**$85.15**141 rev6mo ago](https://www.amazon.com/dp/B0GHWFTRKG) [**KINGrinder K7 Manual Coffee Grinder Bent Handle Stainless Burr**KINGrinder**$144.28**23 rev7mo ago](https://www.amazon.com/dp/B0G5XZ9R1N) [**CEVING Worlds First 60g Large Capacity Manual Coffee Grinder Black**CEVING**$30.93**599 rev1y ago](https://www.amazon.com/dp/B0DTHN8ZMG) [**SliverKINGrinder K6 Manual Coffee Grinder Straight Handle Stainless Burr**KINGrinder**$106.40**905 rev2y ago](https://www.amazon.com/dp/B0GKFDZ725) [**GrayKINGrinder K6 Manual Coffee Grinder Straight Handle Stainless Burr**KINGrinder**$100.50**905 rev2y ago](https://www.amazon.com/dp/B0CY1XFXB8)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**SliverKINGrinder K6 Manual Coffee Grinder Straight Handle Stainless Burr**KINGrinder**$106.40**4.6★**▲ 328%**](https://www.amazon.com/dp/B0GKFDZ725) [**SliverKINGrinder K2 Manual Coffee Grinder Straight Handle Stainless Burr**KINGrinder**$85.15**4.7★**▲ 315%**](https://www.amazon.com/dp/B0GHWFTRKG) [**KINGrinder K7 Manual Coffee Grinder Bent Handle Stainless Burr**KINGrinder**$144.28**4.8★**▲ 202%**](https://www.amazon.com/dp/B0G5XZ9R1N) [**CEVING Worlds First 60g Large Capacity Manual Coffee Grinder Black**CEVING**$30.93**4.6★**▲ 79%**](https://www.amazon.com/dp/B0DTHN8ZMG) [**TIMEMORE Chestnut C3S Manual Coffee Grinder Stainless Steel S2C Conical Burr Coffee Grinder Hand Coffee Grinder Adjustable Grind Setting for Travel/Camping/Home Black**TIMEMORE**$74.12**4.6★**— 6%**](https://www.amazon.com/dp/B0CC4ZNBKL)
**~~View all trending →~~**
## **What buyers say about kingrinder**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**22%
*“Decent build quality”*
**Value For Money**14%
*“Excellent value”*
**Ease Of Use**11%
*“Easy to Use”*
**Adjustability/Rotatability/Reclining**5%
*“its very adjustable”*
**Durability**4%
*“I've used it daily since it arrived and no problems whatsoever”*
**Strength**4%
*“Nice grinder, very solid”*
**Efficiency**3%
*“Works better than I thought”*
**Size-Overall**3%
*“The grinds are a consistent size”*
**Advertised Vs Actual Product**3%
*“Works better than I thought”*
**Ease Of Cleaning**3%
*“Excellent small grinder, easy to use and clean”*
### **What buyers complain about **
**Ease Of Use**9%
*“a pain to use”*
**Instructions/User Manual/Troubleshooting**7%
*“manuals are not very detailed”*
**Size-Overall**7%
*“First, its a little larger”*
**Durability**6%
*“after one month of use, they became not even”*
**Material Quality**6%
*“Plastic not super durable”*
**Quality-Overall**4%
*“slightly lack in clarity”*
**Jamming/Clogging**4%
*“It completely jammed after 1 month of normal and correct use”*
**Ease Of Cleaning**3%
*“makes things messy”*
**Grip**2%
*“No grip”*
**Design-Overall**2%
*“This is a serious design flaw”*
### **Top return reasons **
**Functionality-Overall**21%
**Size-Overall**12%
**Value For Money**8%
**Ease Of Use**8%
**Advertised Vs Actual Product**6%
**Product Condition**6%
**Mechanism Issues**5%
**Material Quality**5%
**Handle Quality**5%
**Quality-Overall**4%
## **Common questions**
- **Is kingrinder profitable to sell on Amazon United States?**
- The niche generates $122K/yr across 9 tracked products. 2 of 2 products launched in the last 360 days are still selling. 90-day search growth is -8.8%. Flapen's verdict: Skip it (32/100).
- **How competitive is the kingrinder niche?**
- 3 brands and 5 sellers compete. The top 5 products take 81% of clicks and top 5 brands hold 100% of demand.
- **What do buyers complain about in kingrinder?**
- Top complaints mined from reviews: Ease Of Use, Instructions/User Manual/Troubleshooting, Size-Overall. The return rate is 2.5%.
- **When does demand for kingrinder peak?**
- Demand peaks in Jan–Dec; the busiest month runs 1.8× the quietest.
- **What does it cost to enter the kingrinder niche?**
- Listings span $23.27–$144.28; the average listing price is $75.30 (sweet spot $15–$100). The average incumbent carries 415 reviews — the moat a new listing must climb.
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