18tb External Hard Drive
FailThe top 5 brands take 100% of clicks, so 18tb External Hard Drive is a Fail.
- Flapen Score
- 36 / 100Ranks 6,374 of 8,347 Electronics niches · −7 vs the category median of 4336
- Market size
- $1.8M/yr385K searches / yr
- 90-day growth
- -20.4%search demand this quarter
- Competition
- 63%top-5 click share · 3 brands · 126 sellers
Flapen Score
18tb External Hard Drive against its category
The dotted line is the Electronics average. Past it, 18tb External Hard Drive is stronger. Inside it, weaker.
Market
The 18tb External Hard Drive market on Amazon at a glance
Shoppers on Amazon United States searched for 18tb External Hard Drive 385K times last year and spent an estimated $1.8M. All 3 brands take every click. Demand peaks in Nov. Flapen scores it 36 out of 100, a Fail.
01 · Demand
An estimated 1.0% of those searches ended in a purchase.
Shoppers searched for this 385K times in the last 12 months. That counts every search on Amazon United States for this niche's terms. An estimated 1.0% of those searches ended in a purchase. Searches in the last 90 days moved -20.4% against the 90 days before. Searches, conversion and average price together put the market at an estimated $1.8M a year.
- Searches, last 12 months
- 385K
- Growth, 90 days vs prior 90
- -20.4%
- Conversion, latest week
- 1.0%
- Market size, estimated
- $1.8Ma year
- Peak month
- November2.3× the quietest month
- Top search term
- 20tb hard drive136K searches a year
02 · Price
A sale here is worth $445.72.
Listings sell for $445.72 on average, from $168.16 to $647.96. Amazon reports units sold in ranges. This niche sold 5K to 6K a year. The average listing sells 100 to 250 of them. At $445.72 that is $45K to $111K a year per listing.
- Average price
- $445.72above the $15 to $100 sweet spot
- Price range
- $168.16–$647.96
- Amazon United States median price
- $24.38across 115,062 niches
- Units sold a year
- 5K–6K
- Units per listing a year
- 100–250
- Revenue per listing a year
- $45K–$111K
- Returns
- 3.1%of orders · Amazon United States median 2.1%
03 · Entry bar
The bar here is reviews.
77% of listings pay for placement with sponsored ads. 68% ship with Prime. On an average day, 7.1% of listings are out of stock. The average listing ranks #847 within Data Storage. It carries 24,168 reviews at 4.31 stars, so a new listing needs social proof before a better product.
- Sponsored listings
- 77%
- Prime listings
- 68%
- Out of stock, average day
- 7.1%
- Average rank
- #847in Data Storage
- Average rating
- 4.31 starsAmazon United States average 4.42 stars
- Average reviews
- 24,168per listing
- Listings tracked
- 22
04 · Newcomers
5 of last year's 7 launches cleared the first-year sales bar.
7 products launched here in the last 12 months. 5 of them cleared the first-year sales bar, our mark for a successful launch. The brands on the shelf have sold for 54 months on average, so the names here are settling in.
- Launched, last 12 months
- 7
- Successful launches
- 5Amazon's first-year sales bar
- Average brand age
- 54 months
Products
Top 18tb External Hard Drive products & what they sell for
The products selling here, as shoppers see them on Amazon. Shelf share and sales are our estimates.
Prices and ratings read from Amazon on Jul 30, 2026. The live listing can differ.
Top sellers
by estimated 90-day click share
Seagate IronWolf Pro 20 TB Enterprise NAS Internal HDD CMR 3.5 Inch SATA 6 Gb/s 7 200 RPM 256 MB Cache for RAID Network Attached Storage (ST20000NT001)
- Price
- $454.20
- Rating
- 4.1/5
- Reviews
- 1,879
- Age
- 3y ago

WD 20TB Elements Desktop External Hard Drive USB 3.0 drive for plug-and-play storage - WDBWLG0200HBK-NESN
- Price
- $361.39
- Rating
- 4.6/5
- Reviews
- 128,000
- Age
- 4y ago

Seagate Expansion 22TB External Hard Drive HDD - USB 3.0 with Rescue Data Recovery Services (STKP22000400)
- Price
- $308.84
- Rating
- 4.2/5
- Reviews
- 7,817
- Age
- 1y ago

Seagate Exos 22TB SATA HDD 6Gb/s 7200RPM 3.5-inch Enterprise Hard Drive (ST22000NM000C) (Renewed)
- Price
- $399.43
- Rating
- 4.5/5
- Reviews
- 191
- Age
- 1y ago

Western Digital 20TB WD Red Pro NAS Internal Hard Drive HDD - 7200 RPM SATA 6 Gb/s CMR 512 MB Cache 3.5 - WD202KFGX
- Price
- $461.86
- Rating
- 3.9/5
- Reviews
- 2,261
- Age
- 1y ago
Trending
estimated 90-day click momentum
Seagate Exos ST26000NM001C 26TB 7200 RPM SATA 6Gb/s 512e 3.5in Enterprise Hard Drive (Renewed)
- Price
- $589.16
- Rating
- 4.4/5
- Reviews
- 8
- Age
- 3mo ago

Seagate Exos 26TB Internal Hard Drive HDD - 3.5 in CMR SATA 6Gb/s 7200 RPM 512MB Cache 2.5M MTBF (ST26000NM000C) (Renewed)
- Price
- $611.87
- Rating
- 4.8/5
- Reviews
- 7
- Age
- 2mo ago
![MDD MAXDIGITALDATA X18 MACH.2 (Dual Actuator) 18TB 7200RPM SAS 12Gb/s 512MB Cache 3.5-Inch Enterprise Hard Drive (MDD18TSAS51272E-2X18) - [Not a SATA HDD] (Renewed)](https://m.media-amazon.com/images/I/41LQvqXuwwL.jpg)
MDD MAXDIGITALDATA X18 MACH.2 (Dual Actuator) 18TB 7200RPM SAS 12Gb/s 512MB Cache 3.5-Inch Enterprise Hard Drive (MDD18TSAS51272E-2X18) - [Not a SATA HDD] (Renewed)
- Price
- $299.48
- Rating
- 3.0/5
- Reviews
- 2
- Age
- 4mo ago

Seagate One Touch 20TB External Hard Drive Desktop HDD - USB-C Compatible with Most Windows and macOS Rescue Recovery (STNB20000400)
- Price
- $647.96
- Rating
- 4.6/5
- Reviews
- 272,007
- Age
- 3mo ago

Seagate Exos 28TB Internal Hard Drive HDD - 3.5 in CMR SATA 6Gb/s 7200 RPM 512MB Cache 2.5M MTBF - ST28000NM000C (Renewed)
- Price
- $591.83
- Rating
- 4.4/5
- Reviews
- 19
- Age
- 6mo ago
Newest
by launch date
Seagate Exos 26TB Internal Hard Drive HDD - 3.5 in CMR SATA 6Gb/s 7200 RPM 512MB Cache 2.5M MTBF (ST26000NM000C) (Renewed)
- Price
- $611.87
- Rating
- 4.8/5
- Reviews
- 7
- Age
- 2mo ago

Seagate One Touch 20TB External Hard Drive Desktop HDD - USB-C Compatible with Most Windows and macOS Rescue Recovery (STNB20000400)
- Price
- $647.96
- Rating
- 4.6/5
- Reviews
- 272,007
- Age
- 3mo ago

Seagate Exos ST26000NM001C 26TB 7200 RPM SATA 6Gb/s 512e 3.5in Enterprise Hard Drive (Renewed)
- Price
- $589.16
- Rating
- 4.4/5
- Reviews
- 8
- Age
- 3mo ago
![MDD MAXDIGITALDATA X18 MACH.2 (Dual Actuator) 18TB 7200RPM SAS 12Gb/s 512MB Cache 3.5-Inch Enterprise Hard Drive (MDD18TSAS51272E-2X18) - [Not a SATA HDD] (Renewed)](https://m.media-amazon.com/images/I/41LQvqXuwwL.jpg)
MDD MAXDIGITALDATA X18 MACH.2 (Dual Actuator) 18TB 7200RPM SAS 12Gb/s 512MB Cache 3.5-Inch Enterprise Hard Drive (MDD18TSAS51272E-2X18) - [Not a SATA HDD] (Renewed)
- Price
- $299.48
- Rating
- 3.0/5
- Reviews
- 2
- Age
- 4mo ago

Seagate Exos 28TB Internal Hard Drive HDD - 3.5 in CMR SATA 6Gb/s 7200 RPM 512MB Cache 2.5M MTBF - ST28000NM000C (Renewed)
- Price
- $591.83
- Rating
- 4.4/5
- Reviews
- 19
- Age
- 6mo ago
Competition
Competition: brands, sellers & click share
The top 5 products take an estimated 63% of clicks. Leaders hold, but buyers still shop past them.
Brands
3 falling
Sellers
126
Est. top-5 brand share
100%
Top 20: 100%
Est. top-5 click share
63%
Top 20: 98%
Open market
0%
- Seagate69%
- Western Digital30%
- MDD MAXDIGITALDATA1%
Demand
18tb External Hard Drive search demand
Weekly searches over the year, seasonality beneath. Pick a range.
Peak months: Nov · busiest ÷ quietest = 2.3×
Search terms
Top 18tb External Hard Drive search terms shoppers use
The exact words shoppers type, with estimated yearly volume, growth, and conversion.
- 20tb hard drive136K/yr
- 20 tb hard drive53K/yr
- 20tb hdd36K/yr
- 20tb39K/yr
- 20tb drive10K/yr
- hdd 20tb14K/yr
- 20tb ssd11K/yr
- hard drive 20tb11K/yr
- 20 tb hdd9K/yr
- seagate 20tb10K/yr
Reviews and returns
What reviews say buyers love and hate about 18tb External Hard Drive
We read the reviews and the return reasons for every product selling here.
“breaks”
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
Keep looking
Related niches
Niches in the same category that score near this one. Research these next.
Best Flapen score
The highest-scoring niches we track right now, across every category.
FAQ
Common 18tb External Hard Drive questions
Answered from the same tracked data.
Figures on this page are estimates modeled from public Amazon pages and third-party keyword data. Amazon does not supply them, and no connected seller's data is used. How we handle Amazon data









