e stim
Worth a lookShows a sweet-spot price point ($28.98 avg), but weak search conversion (1.3%) keeps it on the watch list.
Avg price
Incredible$28.98avg listing price — sweet spot $15–$100
Quality gap
Great4.3★avg incumbent rating — lower means beatable quality
Price range
Great$9.24–$120.26cheapest to priciest tracked listing — scored on the share inside $15–$100
Competition
Good43%top-5 click share — leaders hold, buyers still browse
Returns
Good2.6%return rate — above 5% kills the launch gate
Brand share
Good70%top-5 brand share — brands hold most of the demand
Growth
Okay+9.0%90-day search growth — must beat 0% to launch
Market size
Bad$83K$83K/yr · 220K searches
Review moat
Bad11,035.25avg incumbent reviews — the moat a new listing must climb
Conversion
Bad1.3%search→purchase rate — share of searches ending in a sale
According to Flapen's Amazon United States niche tracking, e stim is a $83K/yr Amazon United States market (220K searches/yr). The top 5 brands hold 70% of demand. Demand peaks in Mar–Sep–Oct. Verdict: Worth a look — 50/100.
Data updated Jul 14, 2026 · scored weekly · How we score niches
e stim market data
- Units sold / yr
- 3K–3K
- avg 0–100/product
- Revenue / yr
- $72K–$87K
- units × avg price
- Conversion rate
- 1.3%
- Avg BSR
- #157
- Page quality
- 0%
- Prime
- 94%
- Sponsored
- 75%
- Out of stock
- 0.2%
- Avg brand age
- 55 months
- Avg seller age
- 184 days
Competition & brand share
The top 5 products take 43% of clicks — established leaders, but buyers still shop beyond them.Brands
17 rising
Sellers
35
Top-5 brand share
70%
Top 20: 100%
Top-5 click share
43%
Top 20: 89%
Open market
22%
- AUVON17%
- K-fit16%
- TCFAFA13%
- TENS 700012%
- Discount TENS11%
- AVCOO8%
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — +9.0% search growth over the last 90 days.Peak months: Mar, Sep, Oct · busiest ÷ quietest = 2.2×
Top e stim search terms
- estim144K/yr
- estim electrodes for men42K/yr
- electrosex15K/yr
- e-stim electrodes for men7K/yr
- electro stim toys6K/yr
- e stim electrodes for men5K/yr
Top e stim 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 24 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
TENS 7000 Digital TENS Unit with Accessories - Muscle Stimulator Machine for Back Pain Relief Sciatica Neck Nerve Shoulder Hip Elbow Muscle Pain Relief
TENS 7000$38.564.6★113,152 rev
K-fit Kegel Toner Electrode Probe KM-502
K-fit$23.943.9★1,518 rev
AUVON Rechargeable TENS Unit Muscle Stimulator 24 Modes 4th Gen TENS Machine with 8pcs 2x2 Premium Electrode Pads for Pain Relief
AUVON$24.724.6★34,777 rev
TCFAFA E-stim Adjustable Fabric Silver Thread Conductive Loop Accessories for Tens Stim Finger Massager Accessories
TCFAFA$13.953.5★932 rev
Adjustable Estim Wrist Strap Components 4pcs Blue Stim Loops 4pcs White Wires
TCFAFA$13.073.8★1,965 rev
Newest
by launch date
FirmFlow Pro Mens Core Trainer 12-Mode Private Performance Routine Device for Stamina & Strength USB Rechargeable Discreet & IPX4 Water-Resistant Black
Generic$39.831 rev
Double-Sided Rubber Clip Electrode Soft Rubber Head Red/Black Long-Lasting Anti-Loosening Version (Set of 3)
Digipure$15.0335 rev
AUVON Rechargeable Digital TENS Unit Muscle Stimulator Customizable 8-Mode
AUVON$31.21816 rev
K-fit Kegel Toner Electrode Probe KM-5018
K-fit$23.8823 rev
Male Electric Shock Pulse Erotic Combo Set Penis Anogenital Stimulation Physical Support Bracket Alternative Orgasmic L
OkiiO$28.892 rev
Trending
90-day click momentumFirmFlow Pro Mens Core Trainer 12-Mode Private Performance Routine Device for Stamina & Strength USB Rechargeable Discreet & IPX4 Water-Resistant Black
Generic$39.835.0★
Double-Sided Rubber Clip Electrode Soft Rubber Head Red/Black Long-Lasting Anti-Loosening Version (Set of 3)
Digipure$15.033.9★
Discount TENS - Anal Probe Electrode for TENS EMS E-Stim Electro Stim Units Pelvic Floor Exerciser & Stimulator Stainless Steel & Bio-Plastic with 2mm Pin Connector. Model A2
Discount TENS$25.644.2★
AVCOO 3-in-1 TENS Unit with 32 Modes Dual Channel EMS Muscle Stimulator with 40 Intensities for Gradual Pain Relief Therapy Rechargeable Electronic Pulse Massager with 12 Electrode Pads EVA Case
AVCOO$33.674.7★
Discount TENS - Adjustable Anal Probe Electrode for TENS EMS E-Stim Electro Stim Units Pelvic Floor Exerciser Prostate Stimulator Stainless Steel & Bio-Plastic with 2mm Pin Connector. Model A1
Discount TENS$25.433.8★
What buyers say about e stim
What buyers praise and complain about, mined from review topics.What buyers love
“Works Well”
“Excellent Product”
“Cant beat the price”
“easy to read”
“As advertised”
“Muscle Relief”
“Its powerful”
“Amazing battery life”
“Long charge life”
“This unit has helped me tremendously in dealing with knee pain”
What buyers complain about
“Never worked”
“Broke very quickly”
“Adhesive is terrible”
“battery doesnt last”
“Do not buy poor quality control”
“it wont charge or turn on”
“Confusing with poor instructions”
“won't fit”
“Back pain”
“Not user friendly”
Top return reasons
Common questions
- Is e stim profitable to sell on Amazon United States?
- The niche generates $83K/yr across 32 tracked products. 1 of 2 products launched in the last 360 days are still selling. 90-day search growth is +9.0%. Flapen's verdict: Worth a look (50/100).
- How competitive is the e stim niche?
- 17 brands and 35 sellers compete. The top 5 products take 43% of clicks and top 5 brands hold 70% of demand.
- What do buyers complain about in e stim?
- Top complaints mined from reviews: Functionality-Overall, Durability, Adhesion/Stickiness. The return rate is 2.6%.
- When does demand for e stim peak?
- Demand peaks in Mar–Sep–Oct; the busiest month runs 2.2× the quietest.
- What does it cost to enter the e stim niche?
- Listings span $9.24–$120.26; the average listing price is $28.98 (sweet spot $15–$100). The average incumbent carries 11,035 reviews — the moat a new listing must climb.