Km
Skip itBrand-locked demand (top 5 brands take 100% of clicks) — this niche doesn't clear our bar today.
Returns
Incredible0.2%return rate — above 5% kills the launch gate
Avg price
Incredible$45.81avg listing price — sweet spot $15–$100
Price range
Great$14.31–$124.17cheapest to priciest tracked listing — scored on the share inside $15–$100
Quality gap
Okay4.5★avg incumbent rating — lower means beatable quality
Review moat
Okay2,928.82avg incumbent reviews — the moat a new listing must climb
Growth
Okay+1.1%90-day search growth — must beat 0% to launch
Competition
Bad77%top-5 click share — a locked-up shelf
Conversion
Bad1.4%search→purchase rate — share of searches ending in a sale
Market size
Bad$37K$37K/yr · 59K searches
Brand share
Bad100%top-5 brand share — brand-locked demand
Is km profitable on Amazon?
According to Flapen's Amazon United States niche tracking, km is a $37K/yr Amazon United States market (59K searches/yr). The top 5 brands hold 100% of demand. Verdict: Skip it — 34/100.
Data updated Jul 28, 2026 · scored weekly · How we score niches
km market size & sales
Units sold, revenue, conversion and listing quality across the tracked shelf.- Units sold / yr
- 2K–2K
- avg 100–250/product
- Revenue / yr
- $69K–$92K
- units × avg price
- Conversion rate
- 1.4%
- Avg BSR
- #332
- Page quality
- 0%
- Prime
- 82%
- Sponsored
- 91%
- Out of stock
- 0.0%
- Avg brand age
- 72 months
- Avg seller age
- 163 days
Competition: brands, sellers & click share
The top 5 products capture 77% of clicks — a locked-up shelf that new listings rarely crack.Brands
4 rising
Sellers
10
Top-5 brand share
100%
Top 20: 100%
Top-5 click share
77%
Top 20: 100%
Open market
0%
- Univera77%
- KM Legend13%
- Designs for Health7%
- Optimox3%
- Open — no brand owns it (0%)
km demand & seasonality
Weekly Amazon search volume, last 13 weeks — +1.1% search growth over the last 90 days.Top km search terms shoppers use
The exact queries shoppers type, with yearly volume, growth and conversion.- univera6K/yr
- univera xtra2K/yr
- matol-univera-potassium-supplement-botanical3K/yr
Top km products & what they sell for
Every tracked product — its share of the shelf, its review moat, and what it sells for.Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
All 11 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Univera km Liquid Potassium Supplement pH Balance Digestion Support Mineral Supplements with Magnesium Original Karl Jurak Formula 32 fl oz (30-Day Supply)
Univera$44.104.6★1,557 rev
Univera KM Mineral Supplement | Original Karl Jurak Formula | Rich in Potassium & Vitamins | Stabilizes pH Balance | Supports Digestion + Nutrient Absorption | Natural Phytonutrients | 60 Day Supply
Univera$84.424.6★1,557 rev
Designs for Health K+2 Potassium - 300mg Two Forms of Potassium - Potassium Bicarbonate + Glycinate Pills - Supplement Support to Help Maintain Healthy Blood Pressure Levels (120 Capsules)
Designs for Health$35.854.5★875 rev
Xtra Concentrate Vitamin B Complex Vital Energy 15 All-Natural Ingredients Supports Stress Management and Joint Health Enhanced Antioxidant Protection Liquid 30-Day Supply 33oz Bottle
Univera$53.864.5★370 rev
Univera Aloe Vera Juice Preminum Organic Aloe Vera Digestive Enzymes for Gut Health Immune Support & Gut Health Aloe Flavor - 30 Days Supply (33 fl oz)
Univera$39.084.4★73 rev
Newest
by launch date
KM Legend Mens Leather Dress Belt for Work Business and Casual Seattle Burgundy 38 US
KM Legend$17.04326 rev
KM Legend Wallet for Women Slim RFID Blocking Credit Card Holder with ID Window Double Zipper Compact Purses for Women with Coin Pocket
KM Legend$18.6655 rev
Glucosamine Chondroitin MSM with Univestin | Joint Support Powder Drink Mix for Mobility & Flexibility | Raspberry Flavor | 30-Day Supply (7g x 30 Sticks)
Univera$33.94254 rev
Univera KM Mineral Supplement | Original Karl Jurak Formula | Rich in Potassium & Vitamins | Stabilizes pH Balance | Supports Digestion + Nutrient Absorption | Natural Phytonutrients | 90 Day Supply
Univera$124.171,557 rev
Univera Aloe Vera Juice Preminum Organic Aloe Vera Digestive Enzymes for Gut Health Immune Support & Gut Health Aloe Flavor - 30 Days Supply (33 fl oz)
Univera$39.0873 rev
Trending
90-day click momentum
KM Legend Mens Genuine Leather Dress Belt with Premium Quality - Classic & Fashion Design for Work Business and Casual (esBrown 40)
KM Legend$14.314.5★
KM Legend Mens Leather Dress Belt for Work Business and Casual Seattle Burgundy 38 US
KM Legend$17.044.4★
Designs for Health K+2 Potassium - 300mg Two Forms of Potassium - Potassium Bicarbonate + Glycinate Pills - Supplement Support to Help Maintain Healthy Blood Pressure Levels (120 Capsules)
Designs for Health$35.854.5★
KM Legend Wallet for Women Slim RFID Blocking Credit Card Holder with ID Window Double Zipper Compact Purses for Women with Coin Pocket
KM Legend$18.664.6★
ARG Optimox Iodoral 12.5 mg - Iodine & Potassium Iodide Supplement for Thyroid & Metabolic Balance Support - Free of Soy & Gluten - 90 Servings - 90 Tablets
Optimox$38.514.6★
What reviews say buyers love and hate about km
What buyers praise and complain about, mined from review topics.What buyers love
“Excellent product”
“Good supplement”
“Works well”
“Like the refreshing taste”
“Exactly as advertised”
“Easy to swallow”
“Helps leg cramps”
“Excellent for joint support”
“Helps me through the day”
“fits alot”
What buyers complain about
“I have severe low potassium”
“error I felt it was a magnesium deficiency”
“Poor Quality control”
“I refused to take them nor knowing if contaminated”
“Certain Types Of High Blood Pressure And Fatigue”
“Too long”
“Unsealed; inside cap and top of bottle looked burnt or corroded”
“I hate taking pills”
“I would rather not have Aloe Vera sweetened”
“Disliked the taste”
Top return reasons
Common km questions
- Is km profitable to sell on Amazon United States?
- The niche generates $37K/yr across 11 tracked products. 90-day search growth is +1.1%. Flapen's verdict: Skip it (34/100).
- How competitive is the km niche?
- 4 brands and 10 sellers compete. The top 5 products take 77% of clicks and top 5 brands hold 100% of demand.
- What do buyers complain about in km?
- Top complaints mined from reviews: Calcium, Magnesium, Quality-Overall. The return rate is 0.2%.
- What does it cost to enter the km niche?
- Listings span $14.31–$124.17; the average listing price is $45.81 (sweet spot $15–$100). The average incumbent carries 2,929 reviews — the moat a new listing must climb.