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18tb

Fail

The top 5 brands take 100% of clicks, so 18tb is a Fail.

Flapen Score
25
25 / 100
Ranks 986 of 1,028 Computers & Accessories niches · −17 vs the category median of 42
Market size
£47K/yr26K searches / yr
90-day growth
-19.5%search demand this quarter
Competition
67%top-5 click share · 3 brands · 274 sellers

Flapen Score

18tb against its category

The dotted line is the Computers & Accessories average. Past it, 18tb is stronger. Inside it, weaker.

25Fail
Big MarketTrendingHigh ConversionOpen MarketLow ReturnsPrice rangeAvg priceNo Dominant BrandLow Review BarrierQuality Gap
This niche Category average

Market

The 18tb market on Amazon at a glance

Shoppers on Amazon United Kingdom searched for 18tb 26K times last year and spent an estimated £47K. All 3 brands take every click. Demand peaks in Nov. Flapen scores it 25 out of 100, a Fail.

01 · Demand

0.6% of searches ended in a purchase last week.

Shoppers searched for this 26K times in the last 12 months. That counts every search on Amazon United Kingdom for this niche's terms. In the latest week, 0.6% of those searches ended in a purchase. Searches in the last 90 days moved -19.5% against the 90 days before. Searches, conversion and average price together put the market at an estimated £47K a year.

Searches, last 12 months
26K
Growth, 90 days vs prior 90
-19.5%
Conversion, latest week
0.6%
Market size, estimated
£47Ka year
Peak month
November1.9× the quietest month
Top search term
18tb hard drive13K searches a year

02 · Price

A sale here is worth £305.87.

Listings sell for £305.87 on average, from £227.49 to £419.69. Amazon reports units sold in ranges. This niche sold 250 to 500 a year. The average listing sells 0 to 100 of them. At £305.87 that is £0 to £31K a year per listing.

Average price
£305.87above the $15 to $100 sweet spot
Price range
£227.49–£419.69
Amazon United Kingdom median price
£12.12across 27,606 niches
Units sold a year
250–500
Units per listing a year
0–100
Revenue per listing a year
£0–£31K
Returns
2.8%of orders · Amazon United Kingdom median 0.6%

03 · Entry bar

The bar here is reviews.

56% of listings pay for placement with sponsored ads. 72% ship with Prime. On an average day, 1.2% of listings are out of stock. The average listing ranks #77 within Data Storage. It carries 7,677 reviews at 4.23 stars, so a new listing needs social proof before a better product.

Sponsored listings
56%
Prime listings
72%
Out of stock, average day
1.2%
Average rank
#77in Data Storage
Average rating
4.23 starsAmazon United Kingdom average 4.36 stars
Average reviews
7,677per listing
Listings tracked
18

04 · Newcomers

Brands here are settling in.

The brands on the shelf have sold for 45 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
45 months

Products

Top 18tb products & what they sell for

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

Competition

Competition: brands, sellers & click share

The top 5 products take 67% of clicks. Leaders hold, but buyers still shop past them.

£0£5K£9K£14K£19K1001K10K100K Review Count Sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

Brands

3 flat

Sellers

274

Top-5 brand share

100%

Top 20: 100%

Top-5 click share

67%

Top 20: 100%

Open market

0%

  • Western Digital62%
  • Seagate36%
  • Toshiba3%
  • Open — no brand owns it (0%)

Demand

18tb search demand

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

1K750Spike '24Holiday '24Spike '25Prime Day '25Black Friday '25Spike '26DecMarJunAugNovMarMay

Peak months: Nov · busiest ÷ quietest = 1.9×

Search terms

Top 18tb search terms shoppers use

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

  • 18tb hard drive13K/yr
  • 18tb6K/yr
  • 18tb external hard drive4K/yr
  • 18tb hdd4K/yr

Reviews and returns

What reviews say buyers love and hate about 18tb

What buyers praise, what they complain about and why they send it back, from the reviews.

Complain

Durability21%−0.25

Total failure

died after 7

Got 2 of the 3 disks failing within months

Noise Level18%+1.29

Ridiculously loud

Extremely loud

A bit noisy

Storage Capacity7%+0.25

I know that you don't get the full storage because of os and suff

Do not buy this if you have important data to store

NOT 20TB AFTER ALL

Value For Money6%+0.13

Its not cheap

Not really worth £345

gone up hugely in price

Strength5%−0.02

Doesn't feel rugged

probably due to how fragile these are

Love

Data Transfer Speed12%+0.86

easy to setup, decent transfer and access rates

the files copied easily and quickly

Good quality drive, fast speeds

Storage Capacity11%+0.25

Great value for 20TB of storage

Great capacity

Great value storage

Durability9%−0.25

durable

Great price, reliable so far (2 months)

After a couple of months of use, I've had no issues at all

Value For Money9%+0.13

Great value

worth it

For the size the price is excellent

Advertised Vs Actual Product8%−0.02

Works as expected

As described

Disk is working as expected, no flaws,

Return

2.8% Return rate 0% Fixable by listing

Functionality-Overall24%▆▄▆▆▃█

Didn't work, returned

Seemed to upload stuff, but was unsearchable, then frequently simply failed to start, and then stopped working altogether

Occasionally the drive just stops backing up altogether

Noise Level16%█▂▆▄▄▃

Ridiculously loud

Extremely loud

A bit noisy

Defective Material/Parts11%▄▆▂▃▇█
Connectivity-Overall9%▄█▇▃▇▃
Durability5%▅▄▇▄█▁

Total failure

died after 7

Got 2 of the 3 disks failing within months

FAQ

Common 18tb questions

Answered from the same tracked data.