The WD - Purple 4TB Surveillance Internal Hard Drive costs $0.0350/GB while the Seagate One Touch, 4TB, Password Activated Hardware encryption, Portable External Hard Drive, Portable External Hard Drive, PC, Notebook & Mac, USB 3.0, Black (STKZ4000400) costs $0.0375/GB. WD - Purple 4TB Surveillance Internal Hard Drive offers 7% better value per gigabyte as of April 2026. Both products are available on BuyPerUnit with prices from Amazon, Best Buy, and Newegg.
WD - Purple 4TB Surveillance Internal Hard Drive vs Seagate One Touch, 4TB, Password Activated Hardware encryption, Portable External Hard Drive, Portable External Hard Drive, PC, Notebook & Mac, USB 3.0, Black (STKZ4000400) — Which Is Better Value?
WD - Purple 4TB Surveillance Internal Hard Drive
Specification Comparison
| Spec | WD - Purple 4TB Surveillance Internal Hard Drive | Seagate One Touch, 4TB, Password Activated Hardware encryption, Portable External Hard Drive, Portable External Hard Drive, PC, Notebook & Mac, USB 3.0, Black (STKZ4000400) |
|---|---|---|
| Brand | Western Digital | Seagate |
| Capacity | 4 TB | 4 TB |
| $/GB | $0.0350 | $0.0375 |
| Price | $139.99 | $149.99 |
| Retailer | Best Buy | Amazon |
| Category | Hard Drives (HDD) | Hard Drives (HDD) |
| Subcategory | hdd | hdd |
Price Across Retailers
Which Should You Buy?
Based on current pricing data, the WD - Purple 4TB Surveillance Internal Hard Drive offers better value at $0.0350//GB compared to the Seagate One Touch, 4TB, Password Activated Hardware encryption, Portable External Hard Drive, Portable External Hard Drive, PC, Notebook & Mac, USB 3.0, Black (STKZ4000400) at $0.0375//GB — that's roughly 7% less per gigabyte.
The best deal for the WD - Purple 4TB Surveillance Internal Hard Drive is $139.99 at Best Buy, while the Seagate One Touch, 4TB, Password Activated Hardware encryption, Portable External Hard Drive, Portable External Hard Drive, PC, Notebook & Mac, USB 3.0, Black (STKZ4000400) starts at $149.99 at Amazon.
However, price per gigabyte isn't everything — consider factors like warranty, performance specs, brand reliability, and your specific capacity needs. Check each WD - Purple 4TB Surveillance Internal Hard Drive and Seagate One Touch, 4TB, Password Activated Hardware encryption, Portable External Hard Drive, Portable External Hard Drive, PC, Notebook & Mac, USB 3.0, Black (STKZ4000400) product page for detailed specifications and price history.
Frequently Asked Questions
Is WD - Purple 4TB Surveillance Internal Hard Drive or Seagate One Touch, 4TB, Password Activated Hardware encryption, Portable External Hard Drive, Portable External Hard Drive, PC, Notebook & Mac, USB 3.0, Black (STKZ4000400) a better deal?
As of April 2026, WD - Purple 4TB Surveillance Internal Hard Drive offers better value at $0.0350//GB compared to Seagate One Touch, 4TB, Password Activated Hardware encryption, Portable External Hard Drive, Portable External Hard Drive, PC, Notebook & Mac, USB 3.0, Black (STKZ4000400) at $0.0375//GB. That is approximately 7% better value per gigabyte.
What is the price per GB of WD - Purple 4TB Surveillance Internal Hard Drive?
The WD - Purple 4TB Surveillance Internal Hard Drive is currently priced at $0.0350/GB ($139.99 for 4 TB) at Best Buy.
Where can I buy Seagate One Touch, 4TB, Password Activated Hardware encryption, Portable External Hard Drive, Portable External Hard Drive, PC, Notebook & Mac, USB 3.0, Black (STKZ4000400) for the cheapest price?
The cheapest price for the Seagate One Touch, 4TB, Password Activated Hardware encryption, Portable External Hard Drive, Portable External Hard Drive, PC, Notebook & Mac, USB 3.0, Black (STKZ4000400) is $149.99 at Amazon, which works out to $0.0375/GB.