4TB external hard drive prices: cheapest 4TB offers by price per TB
4TB external hard drive: the cheapest new offer on amazon.com right now is Seagate Expansion 4 TB for $175.00, which is $43.75 per TB. The median of the 9 new 4TB offers is $199.99 (as of Oct 28, 2026 at 1:17 AM UTC). The list below shows all 11 offers in this size with price, condition and price timestamp, sorted by price per TB.
90 days
Price board
Filters and view
| Compare | Trend 30 days | Form factor | Technology | Condition | Product | Store | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| $42.49 | $169.95 | 4 TB | ▼ 2.9 % | $36.46 | n/a | 2.5" external | HDD | UsedUsed | WD Elements 4 TB | |||
| $43.75 | $175.00 | 4 TB | ▲ 1.3 % | $41.97 | n/a | 3.5" external | HDD | NewNew | Seagate Expansion 4 TB | |||
| $45.97 | $183.89 | 4 TB | ▼ 5.2 % | $41.54 | n/a | 2.5" external | HDD | NewNew | WD Elements 4 TB | |||
| $47.25 | $188.99 | 4 TB | ▲ 1.1 % | $38.34 | n/a | 2.5" external | HDD | UsedUsed | WD My Passport 4 TB | |||
| $47.50 | $189.99 | 4 TB | ▲ 5.6 % | $44.49 | n/a | 2.5" external | HDD | NewNew | WD My Passport 4 TB | |||
| $47.50 | $189.99 | 4 TB | 0.0 % | $47.50 | n/a | 2.5" external | HDD | NewNew90d low | Seagate Expansion 4 TB90-day low | 90d lowView * | ||
| $50.00 | $199.99 | 4 TB | 0.0 % | $50.00 | n/a | 2.5" external | HDD | NewNew90d low | Seagate One Touch 4 TB90-day low | 90d lowView * | ||
| $53.98 | $215.90 | 4 TB | ▼ 4.4 % | $53.98 | n/a | 2.5" external | HDD | NewNew90d low | LaCie Secure 4 TB90-day low | 90d lowView * | ||
| $60.74 | $242.96 | 4 TB | ▲ 6.3 % | $53.01 | n/a | 2.5" external | HDD | NewNew | WD My Passport 4 TB | |||
| $62.41 | $249.65 | 4 TB | ▼ 0.2 % | $59.74 | n/a | 2.5" external | HDD | NewNew | WD My Passport Ultra 4 TB | |||
| $62.81 | $251.23 | 4 TB | ▲ 0.3 % | $47.50 | n/a | 2.5" external | HDD | NewNew | LaCie Rugged Mini 4 TB |
No offers match these filters.
How much does a 4TB external hard drive cost?
A 4TB external hard drive costs from $175.00 new on amazon.com. Half of the 9 new offers cost less than $199.99, the other half more. Per TB, that is from $43.75.
Price per TB is the total price divided by capacity, with 1 TB equal to 10^12 bytes. Shipping is not included. ratioDB checks prices regularly and shows on every offer when its price was last checked.
Which 4TB external hard drive is cheapest per TB?
The cheapest per TB right now is Seagate Expansion 4 TB at $43.75 per TB. The table shows the 5 cheapest new 4TB offers.
Cheapest new 4TB offers on amazon.com, as of Oct 28, 2026 at 1:17 AM UTC
| Model | Price | Price per TB |
|---|---|---|
| Seagate Expansion 4 TB | $175.00 | $43.75 |
| WD Elements 4 TB | $183.89 | $45.97 |
| WD My Passport 4 TB | $189.99 | $47.50 |
| Seagate Expansion 4 TB | $189.99 | $47.50 |
| Seagate One Touch 4 TB | $199.99 | $50.00 |
Check warranty and condition when you compare. Every row in the list shows whether an offer is new, renewed or used.
Is 4TB cheaper per TB than other sizes?
Not right now. The cheapest size per TB is 8 TB at $35.00 per TB for the cheapest new offer.
Cheapest new offer per size, external hard drives on amazon.com, as of Oct 28, 2026 at 1:17 AM UTC
Bigger models are not automatically cheaper per TB. Compare price per TB before you settle on a size.
2.5" or 3.5": which 4TB external hard drive?
External 2.5" hard drives run on USB power and fit in a pocket. External 3.5" hard drives need their own power adapter and suit desktop backups.
New 4TB external hard drives by type, as of Oct 28, 2026 at 1:17 AM UTC
| Type | New offers | Cheapest per TB |
|---|---|---|
| External 2.5" | 8 | $45.97 |
| External 3.5" | 1 | $43.75 |
Which external drive pays off is covered in Best external hard drive.
How have 4TB external hard drive prices developed?
The index for 4TB external hard drive is at $50.00 per TB and has changed by -0.4% over 30 days. Its lowest value over the last 90 days is $47.50 per TB.
The index is the median of up to 10 cheapest new offers in this size per day. The percentages only compare offers that had a price on both days. The chart above shows the history day by day.
Is a renewed or used 4TB offer worth it?
There are 2 used offers from $42.49 per TB. New starts at $43.75 per TB. A used offer pays off mainly if it is clearly cheaper and comes with a warranty.
ratioDB never includes used or renewed offers in the index. What to watch for is covered in Refurbished hard drives.
4TB external hard drive FAQ
How much does a 4TB external hard drive cost right now?
New from $175.00 on amazon.com, which is $43.75 per TB (as of Oct 28, 2026 at 1:17 AM UTC). The median of the 9 new offers is $199.99.
How current are the prices?
ratioDB checks amazon.com prices regularly, usually several times a day. Every offer shows when its price was last checked. Amazon may have changed the price since.
Why does ratioDB show price per TB?
Price per TB makes different sizes and offers comparable. You see right away whether a 4TB offer is cheap or whether another size gets you more storage for the money.
Are used offers in the list?
Yes, the list shows new, renewed and used offers, every row labeled with its condition. The index and the values in the tables of this text use new offers only.