18tb
brand-locked demand (top 5 brands take 100% of clicks) — 18tb doesn't clear our bar today.
Flapen Score
Is 18tb profitable on Amazon?
According to Flapen's Amazon United Kingdom niche tracking, 18tb is a £47K/yr Amazon United Kingdom market (26K searches/yr). The top 5 brands hold 100% of demand. Demand peaks in Nov. Verdict: Skip it — 25/100.
18tb: the Amazon niche in one read
Everything a seller checks before entering, in three answers.
Is the demand real?
Not really. Search demand moved -19.5% over the last 90 days and 0.6% of searches end in a purchase.
£47K
revenue / yr
Who owns the niche?
The top 5 brands hold 100% of demand, so 0% of the market is open.
0%
open market share
Is there a way in?
Listing quality. The average product page scores 0/100 on content standards. Incumbents average 4.2★ — the gap to enter on.
0/100
page quality · 18 products
Top 18tb products & what they sell for
Every tracked product — its share of the shelf, its review moat, and what it sells for.
Top sellers
by 90-day click share
WD 18TB My Book external hard drive Desktop HDD with Password Protection USB 3.0 SuperSpeed USB software for device management backup hardware encryption works with PC and Mac Black
- Price
- £279.04
- Rating
- 4.3/5
- Reviews
- 7,392
- Age
- 5y ago
WD 18TB Elements Desktop External Hard Drive - USB 3.0 Black
- Price
- £241.19
- Rating
- 4.6/5
- Reviews
- 19,698
- Age
- 5y ago
Seagate Exos X18 Enterprise Class 18TB Enterprise Internal Hard Drive SATA 3 5 6Gbit/s 128MB cache ((ST18000NM000J)
- Price
- £316.42
- Rating
- 4.0/5
- Reviews
- 674
- Age
- 5y ago
Seagate Expansion Desktop 20TB External Hard Drive USB 3.0 Data Rescue Services (STKP20000400)
- Price
- £272.38
- Rating
- 4.3/5
- Reviews
- 18,468
- Age
- 1y ago
Seagate Expansion Desktop 16TB External Hard Drive USB 3.0 Data Rescue Services (STKP16000400)
- Price
- £227.49
- Rating
- 4.3/5
- Reviews
- 18,468
- Age
- 6y ago
Trending
90-day click momentum
Seagate One Touch Hub 18TB External Hard Drive Desktop HDD USB-C & USB 3.0 port for Computer Desktop Workstation PC Laptop Mac (STLC18000400)
- Price
- £343.85
- Rating
- 4.0/5
- Reviews
- 2,730
- Age
- 4y ago
Seagate Exos 28TB internal server hard drive ST28000NM000C 3.5 HDD SATA 6Gb/s 7200RPM 512MB Cache (Renewed)
- Price
- £371.75
- Rating
- 4.2/5
- Reviews
- 128
- Age
- 1y ago
WD 16TB My Book external hard drive Desktop HDD with Password Protection USB 3.0 SuperSpeed USB software for device management backup hardware encryption works with PC and Mac Black
- Price
- £270.56
- Rating
- 4.3/5
- Reviews
- 7,392
- Age
- 5y ago
WD 18TB My Book external hard drive Desktop HDD with Password Protection USB 3.0 SuperSpeed USB software for device management backup hardware encryption works with PC and Mac Black
- Price
- £279.04
- Rating
- 4.3/5
- Reviews
- 7,392
- Age
- 5y ago
Western Digital Ultrastar DC HC550 Enterprise Hard Drive 18TB (3.5 SATA 6Gbps SAS 12Gbps 7200RPM 512MB Cache)
- Price
- £379.52
- Rating
- 3.7/5
- Reviews
- 183
- Age
- 6y ago
Newest
by launch dateSeagate Expansion Desktop 20TB External Hard Drive USB 3.0 Data Rescue Services (STKP20000400)
- Price
- £272.38
- Rating
- 4.3/5
- Reviews
- 18,468
- Age
- 1y ago
Seagate IronWolf Pro 20TB Enterprise Internal NAS HDD CMR 3.5 Inch SATA 6GB/s 7.200 RPM 256MB Cache for RAID NAS Rescue Services - Frustration Free Packaging (ST20000NTZ01)
- Price
- £412.84
- Rating
- 4.5/5
- Reviews
- 987
- Age
- 1y ago
Seagate Exos X22 22TB Internal Server Festplatte ST22000NM000C 3.5 Zoll HDD SATA 6Gb/s 512E SED 7200RPM 512MB Cache (Refurbished)
- Price
- £325.24
- Rating
- 4.2/5
- Reviews
- 183
- Age
- 1y ago
Seagate Exos 28TB internal server hard drive ST28000NM000C 3.5 HDD SATA 6Gb/s 7200RPM 512MB Cache (Renewed)
- Price
- £371.75
- Rating
- 4.2/5
- Reviews
- 128
- Age
- 1y ago
Seagate Enterprise 3.5 18000 GB 7200 RPM 18 TB 3.5 7200 RPM SATA ST18000NM00J (Renewed)
- Price
- £247.50
- Rating
- 4.2/5
- Reviews
- 156
- Age
- 2y ago
Competition: brands, sellers & click share
The top 5 products take 67% of clicks — established leaders, but buyers still shop beyond them.
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%)
18tb demand & seasonality
Weekly search volume, with the niche's key stats alongside.
Peak months: Nov · busiest ÷ quietest = 1.9×
Top 18tb search terms shoppers use
The exact queries shoppers type, with yearly volume, growth and conversion.
- 18tb hard drive13K/yr
- 18tb6K/yr
- 18tb external hard drive4K/yr
- 18tb hdd4K/yr
What reviews say buyers love and hate about 18tb
What buyers mention most, as a share of all reviews.
What buyers love
72% of reviews“easy to setup, decent transfer and access rates”
“Great value for 20TB of storage”
“durable”
“Great value”
“Works as expected”
What buyers complain about
74% of reviews“Total failure”
“Ridiculously loud”
“I know that you don't get the full storage because of os and suff”
“Its not cheap”
“Doesn't feel rugged”
18tb return rate & reasons
Why buyers send it back, as a share of all return requests.
2.8%
Return rate
0%
Fixable by listing
The "fixable" share counts expectation-mismatch reasons — size, look, advertised-vs-actual — that better copy and images address.
Common 18tb questions
The questions sellers ask about this niche, answered from the tracked metrics.
Related niches
Same-category niches scoring near this one — the next ones worth researching.
Best Flapen score
The highest-scoring niches we track right now, across every category.
