---
title: "K12 — $11K/mo Amazon US Product Research (2026)"
canonical_url: "https://flapen.com/research/us/health-household/k12"
last_updated: "2026-08-12T14:51:30.345Z"
locale: en
meta:
description: "Amazon product research for k12: $11K/mo market, demand, competition, pricing, reviews & the verdict. Know if it's worth selling — Flapen."
"og:description": "Amazon product research for k12: $11K/mo market, demand, competition, pricing, reviews & the verdict. Know if it's worth selling — Flapen."
"og:title": "K12 — $11K/mo Amazon US Product Research (2026)"
---
# **K12**
**Skip it**
Brand-locked demand (top 5 brands take 100% of clicks) — this niche doesn't clear our bar today.
Market size 29Growth 22Conversion 95Competition 7Returns 100Price range 95Avg price 95Brand share 0Review moat 39Quality gap 75
**Returns**
**Incredible****0.0%**
return rate — above 5% kills the launch gate
**Conversion**
**Incredible****12.6%**
search→purchase rate — share of searches ending in a sale
**Avg price**
**Incredible****$25.60**
avg listing price — sweet spot $15–$100
**Price range**
**Incredible****$15.11–$37.85**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Quality gap**
**Great****4.3★**
avg incumbent rating — lower means beatable quality
**Review moat**
**Okay****2,596.14**
avg incumbent reviews — the moat a new listing must climb
**Market size**
**Okay****$130K**
$130K/yr · 41K searches
**Growth**
**Bad****-5.8%**
90-day search growth — must beat 0% to launch
**Competition**
**Bad****92%**
top-5 click share — a locked-up shelf
**Brand share**
**Bad****100%**
top-5 brand share — brand-locked demand
## **Is k12 profitable on Amazon?**
According to Flapen's Amazon United States niche tracking, k12 is a $130K/yr Amazon United States market (41K searches/yr). The top 5 brands hold 100% of demand. Demand peaks in Dec. Verdict: Skip it — 47/100.
Data updated Jul 25, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **k12 market size & sales**
Units sold, revenue, conversion and listing quality across the tracked shelf.
- **Units sold / yr**
- **4K–5K**
- avg 250–500/product
- **Revenue / yr**
- **$102K–$128K**
- units × avg price
- **Conversion rate**
- **12.6%**
- **Avg BSR**
- **#1,223**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **86%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **72 months**
- **Avg seller age**
- **172 days**
## **Competition: brands, sellers & click share**
The top 5 products capture 92% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**5 **—flat
**Sellers**
**24**
**Top-5 brand share**
**100%**
Top 20: 100%
**Top-5 click share**
**92%**
Top 20: 100%
**Open market**
**0%**
- NOW Foods66% - BLIS19% - Hyperbiotics5% - Great Oral Health5% - BioGaia5%
## **k12 demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -5.8% search growth over the last 90 days.
1K800Holiday '24Spike '25 seasonSepDecMarJunAugNovMarMay
Peak months: Dec · busiest ÷ quietest = 1.6×
[**Open Trend **](https://flapen.com/research/us/health-household/k12/trend)
## **Top k12 search terms shoppers use**
The exact queries shoppers type, with yearly volume, growth and conversion.
- **blis k12**14K/yr-2.1%5.4% conv. - **now oralbiotic**9K/yr-36.1%18.6% conv. - **oralbiotic**6K/yr+18.8%13.9% conv. - **oral biotic**5K/yr+20.1%10.8% conv. - **k12 probiotic**4K/yr-23.5%3.9% conv. - **blis k12 oral probiotic**3K/yr+57.6%4.7% conv. [**All search terms **](https://flapen.com/research/us/health-household/k12/search-terms)
## **Top k12 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.
0%20%$26K40%$52K60%$78K80%$104K1001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 7 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**NOW Foods Supplements OralBiotic Developed for Adults & Children Strain Verified 60 Lozenges**NOW Foods**$15.11**4.2★2,586 rev](https://www.amazon.com/dp/B003P7YVTQ) [2**BLIS Throat Health Oral Probiotics K12 Immune Support 60 Vanilla Lozenges**BLIS**$33.34**4.4★154 rev](https://www.amazon.com/dp/B0CVGR1FF9) [3**Hyperbiotics Vital Nutrients Pro Dental Probiotic | Clinically Studied BLIS K12 and M18 | Oral Probiotics for Bad Breath Treatment for Adults | Oral Health for Teeth and Gums | 45 Mint Tablets**Hyperbiotics**$30.14**4.0★6,567 rev](https://www.amazon.com/dp/B00ONB9JIG) [4**NOW Foods - Oralbiotic Blis K12(R) 60 LOZ (Pack of 3)**NOW Foods**$37.85**4.4★197 rev](https://www.amazon.com/dp/B005DIBAPI) [5**Oral Probiotics for Mouth Bad Breath Treatment for Adults; Dentist Formulated Dental Probiotics for Teeth and Gums Health & Chronic Halitosis with BLIS K12 M18 60 Chewable Oral Health Tablets Mint**Great Oral Health**$27.82**4.2★6,012 rev](https://www.amazon.com/dp/B00KDQW1XU)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**BLIS Throat Health Oral Probiotics K12 Immune Support 60 Vanilla Lozenges**BLIS**$33.34**154 rev2y ago](https://www.amazon.com/dp/B0CVGR1FF9) [**BioGaia Prodentis | Oral Probiotics | Promotes Healthy Gums & Teeth | Defends Against Bad Breath & Dental Problems | Improves Oral Health | Mint Flavored | 30 Dental Probiotic Lozenges**BioGaia**$19.63**2,371 rev7y ago](https://www.amazon.com/dp/B07JC27112) [**BLIS HoneyBLIS Oral Probiotics Manuka Honey K12 Throat Soothe 16 Lozenges**BLIS**$15.33**286 rev8y ago](https://www.amazon.com/dp/B077X7YXJG) [**Hyperbiotics Vital Nutrients Pro Dental Probiotic | Clinically Studied BLIS K12 and M18 | Oral Probiotics for Bad Breath Treatment for Adults | Oral Health for Teeth and Gums | 45 Mint Tablets**Hyperbiotics**$30.14**6,567 rev11y ago](https://www.amazon.com/dp/B00ONB9JIG) [**Oral Probiotics for Mouth Bad Breath Treatment for Adults; Dentist Formulated Dental Probiotics for Teeth and Gums Health & Chronic Halitosis with BLIS K12 M18 60 Chewable Oral Health Tablets Mint**Great Oral Health**$27.82**6,012 rev12y ago](https://www.amazon.com/dp/B00KDQW1XU)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**BioGaia Prodentis | Oral Probiotics | Promotes Healthy Gums & Teeth | Defends Against Bad Breath & Dental Problems | Improves Oral Health | Mint Flavored | 30 Dental Probiotic Lozenges**BioGaia**$19.63**4.4★**▲ 34%**](https://www.amazon.com/dp/B07JC27112) [**NOW Foods Supplements OralBiotic Developed for Adults & Children Strain Verified 60 Lozenges**NOW Foods**$15.11**4.2★**▲ 25%**](https://www.amazon.com/dp/B003P7YVTQ) [**Oral Probiotics for Mouth Bad Breath Treatment for Adults; Dentist Formulated Dental Probiotics for Teeth and Gums Health & Chronic Halitosis with BLIS K12 M18 60 Chewable Oral Health Tablets Mint**Great Oral Health**$27.82**4.2★**▼ 18%**](https://www.amazon.com/dp/B00KDQW1XU) [**BLIS Throat Health Oral Probiotics K12 Immune Support 60 Vanilla Lozenges**BLIS**$33.34**4.4★**▼ 24%**](https://www.amazon.com/dp/B0CVGR1FF9) [**Hyperbiotics Vital Nutrients Pro Dental Probiotic | Clinically Studied BLIS K12 and M18 | Oral Probiotics for Bad Breath Treatment for Adults | Oral Health for Teeth and Gums | 45 Mint Tablets**Hyperbiotics**$30.14**4.0★**▼ 33%**](https://www.amazon.com/dp/B00ONB9JIG)
**~~View all trending →~~**
## **What reviews say buyers love and hate about k12**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Oral Hygiene**23%
*“Helps maintain healthy teeth and gums”*
**Taste-Overall**13%
*“Great taste”*
**Quality-Overall**9%
*“Excellent product”*
**Efficiency**8%
*“Effective”*
**Breathability**8%
*“My breath feels fresher”*
**Advertised Vs Actual Product**4%
*“works as advertised”*
**Regulates Digestion**4%
*“what I have noticed is that this probiotic helps keep my bowels moving”*
**Smell**3%
*“Eliminate mouth odor”*
**Flavor**3%
*“Both flavors are good”*
**Value For Money**2%
*“Value”*
### **What buyers complain about **
**Functionality-Overall**16%
*“Did not work”*
**Taste-Overall**14%
*“tastes terrible”*
**Value For Money**10%
*“Overpriced”*
**Solubility**5%
*“They did not dissolve”*
**Oral Hygiene**4%
*“My dental hygienist had to hunt for plaque on my teeth”*
**Pain Relief-Overall**4%
*“Made my gums hurt”*
**Moist/Dry**3%
*“my mouth was so dry”*
**Natural Ingredients**3%
*“I am shocked to report that this product defies that natural law”*
**Acid Regulator/Stomach Ache Relief**3%
*“These made my stomach hurt so bad all night after I took them”*
**Allergies**3%
*“Broke out in a rash from the product”*
### **Top return reasons **
**Advertised Vs Actual Product**50%
**Water Resistance**50%
## **Common k12 questions**
- **Is k12 profitable to sell on Amazon United States?**
- The niche generates $130K/yr across 7 tracked products. 90-day search growth is -5.8%. Flapen's verdict: Skip it (47/100).
- **How competitive is the k12 niche?**
- 5 brands and 24 sellers compete. The top 5 products take 92% of clicks and top 5 brands hold 100% of demand.
- **What do buyers complain about in k12?**
- Top complaints mined from reviews: Functionality-Overall, Taste-Overall, Value For Money. The return rate is 0.0%.
- **When does demand for k12 peak?**
- Demand peaks in Dec; the busiest month runs 1.6× the quietest.
- **What does it cost to enter the k12 niche?**
- Listings span $15.11–$37.85; the average listing price is $25.60 (sweet spot $15–$100). The average incumbent carries 2,596 reviews — the moat a new listing must climb.
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