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Tdcs

Fail

Shoppers spend an estimated $8K a year here, so Tdcs is a Fail.

Flapen Score
22
22 / 100
Ranks 14,707 of 14,768 Health & Household niches · −27 vs the category median of 49
Market size
$8K/yr39K searches / yr
90-day growth
-12.4%search demand this quarter
Competition
94%top-5 click share · 7 brands · 32 sellers

Flapen Score

Tdcs against its category

The dotted line is the Health & Household average. Past it, Tdcs is stronger. Inside it, weaker.

22Fail
Big MarketTrendingHigh ConversionOpen MarketLow ReturnsPrice rangeAvg priceNo Dominant BrandLow Review BarrierQuality Gap
This niche Category average

Market

The Tdcs market on Amazon at a glance

Shoppers on Amazon United States searched for Tdcs 39K times last year and spent an estimated $8K. The top 5 brands take 94% of clicks. Flapen scores it 22 out of 100, a Fail.

01 · Demand

An estimated 0.1% of those searches ended in a purchase.

Shoppers searched for this 39K times in the last 12 months. That counts every search on Amazon United States for this niche's terms. An estimated 0.1% of those searches ended in a purchase. Searches in the last 90 days moved -12.4% against the 90 days before. Searches, conversion and average price together put the market at an estimated $8K a year.

Searches, last 12 months
39K
Growth, 90 days vs prior 90
-12.4%
Conversion, latest week
0.1%
Market size, estimated
$8Ka year
Peak month
October1.4× the quietest month
Top search term
transcranial magnetic stimulation device10K searches a year

02 · Price

A sale here is worth $140.07.

Listings sell for $140.07 on average, from $33.62 to $266.80. Amazon reports units sold in ranges. This niche sold 100 to 250 a year. The average listing sells 0 to 100 of them. At $140.07 that is $0 to $14K a year per listing.

Average price
$140.07above the $15 to $100 sweet spot
Price range
$33.62–$266.80
Amazon United States median price
$24.38across 115,062 niches
Units sold a year
100–250
Units per listing a year
0–100
Revenue per listing a year
$0–$14K
Returns
4.7%of orders · Amazon United States median 2.1%

03 · Entry bar

The bar here is reviews.

86% of listings pay for placement with sponsored ads. 100% ship with Prime. On an average day, 3.5% of listings are out of stock. The average listing ranks #2,142 within Occupational & Physical Therapy Aids. It carries 12,469 reviews at 4.26 stars, so a new listing needs social proof before a better product.

Sponsored listings
86%
Prime listings
100%
Out of stock, average day
3.5%
Average rank
#2,142in Occupational & Physical Therapy Aids
Average rating
4.26 starsAmazon United States average 4.42 stars
Average reviews
12,469per listing
Listings tracked
7

04 · Newcomers

Brands here are settling in.

The brands on the shelf have sold for 52 months on average, so the names here are settling in.

Launched, last 12 months
0
Successful launches
0Amazon's first-year sales bar
Average brand age
52 months

Products

Top Tdcs products & what they sell for

Every tracked product: its share of the shelf, its reviews, and its price.

Sign in to see the products

The products selling in this niche are for signed-in readers. Every market figure above stays open to everyone.

Competition

Competition: brands, sellers & click share

The top 5 products take 94% of clicks. A locked shelf that new listings rarely crack.

Brands

7 falling

Sellers

32

Top-5 brand share

94%

Top 20: 100%

Top-5 click share

94%

Top 20: 100%

Open market

3%

  • Brand 142%
  • Brand 219%
  • Brand 316%
  • Brand 49%
  • Brand 56%
  • Brand 63%
  • Open — no brand owns it (1 brand, 3%)

Demand

Tdcs search demand

Weekly searches over the year, seasonality beneath. Pick a range.

2K1KSpike '24Prime Day '25Spike '26SepDecMarJunAugNovMarMay

No pronounced peak months · busiest ÷ quietest = 1.4×

Search terms

Top Tdcs search terms shoppers use

The exact words shoppers type, with yearly volume, growth, and conversion.

  • transcranial magnetic stimulation device10K/yr
  • tdcs brain stimulator9K/yr
  • transcranial magnetic stimulation6K/yr
  • tdcs device5K/yr
  • neuromyst2K/yr

Reviews and returns

What reviews say buyers love and hate about Tdcs

We read the reviews and the return reasons for every product selling here.

26%of positive reviews mention “Ease Of Use”
16%of negative reviews mention “Functionality-Overall”
4.7%of orders come back
“For me, no results”
A buyer, on “Functionality-Overall”16% of negative reviews mention the same topic

Every topic

Every topic buyers talk about, one row each.

Red shows the share of negative reviews and green the share of positive reviews, biggest topic first. Open a row to read what they wrote.

16 topics

NegativePositive

FAQ

Common Tdcs questions

Answered from the same tracked data.