The WD Purple 8TB Surveillance Internal Hard Drive HDD - SATA 6Gb/s 256MB Cache 3.5 Inch - WD85PURZ costs $0.0513/GB while the Seagate Expansion 8TB External Hard Drive HDD - USB 3.0, with Rescue Data Recovery Services (STKP8000400) costs $0.0325/GB. Seagate Expansion 8TB External Hard Drive HDD - USB 3.0, with Rescue Data Recovery Services (STKP8000400) offers 37% better value per gigabyte as of August 2026. Both products are available on BuyPerUnit with prices from Amazon, Best Buy, and Newegg.
WD Purple 8TB Surveillance Internal Hard Drive HDD - SATA 6Gb/s 256MB Cache 3.5 Inch - WD85PURZ vs Seagate Expansion 8TB External Hard Drive HDD - USB 3.0, with Rescue Data Recovery Services (STKP8000400) — Which Is Better Value?
Prices refresh twice daily; the final price appears at the retailer's checkout. We may earn a commission from retailer links, at no cost to you; it never affects rankings.
Specification Comparison
| Spec | WD Purple 8TB Surveillance Internal Hard Drive HDD - SATA 6Gb/s 256MB Cache 3.5 Inch - WD85PURZ | Seagate Expansion 8TB External Hard Drive HDD - USB 3.0, with Rescue Data Recovery Services (STKP8000400) |
|---|---|---|
| Brand | Western Digital | Seagate |
| Capacity | 8TB | 8 TB |
| $/GB | $0.0513 | $0.0325 |
| Price | $410.30 | $259.99 |
| Retailer | Newegg | Amazon |
| Category | Hard Drives (HDD) | Hard Drives (HDD) |
| Subcategory | hdd | hdd |
Price Across Retailers
WD Purple 8TB Surveillance Internal Hard Drive HDD - SATA 6Gb/s 256MB Cache 3.5 Inch - WD85PURZ
Seagate Expansion 8TB External Hard Drive HDD - USB 3.0, with Rescue Data Recovery Services (STKP8000400)
Which Should You Buy?
Based on current pricing data, the Seagate Expansion 8TB External Hard Drive HDD - USB 3.0, with Rescue Data Recovery Services (STKP8000400) offers better value at $0.0325//GB compared to the WD Purple 8TB Surveillance Internal Hard Drive HDD - SATA 6Gb/s 256MB Cache 3.5 Inch - WD85PURZ at $0.0513//GB — that's roughly 37% less per gigabyte.
The best deal for the Seagate Expansion 8TB External Hard Drive HDD - USB 3.0, with Rescue Data Recovery Services (STKP8000400) is $259.99 at Amazon, while the WD Purple 8TB Surveillance Internal Hard Drive HDD - SATA 6Gb/s 256MB Cache 3.5 Inch - WD85PURZ starts at $410.30 at Newegg.
However, price per gigabyte isn't everything — consider factors like warranty, performance specs, brand reliability, and your specific capacity needs. Check each WD Purple 8TB Surveillance Internal Hard Drive HDD - SATA 6Gb/s 256MB Cache 3.5 Inch - WD85PURZ and Seagate Expansion 8TB External Hard Drive HDD - USB 3.0, with Rescue Data Recovery Services (STKP8000400) product page for detailed specifications and price history.
Frequently Asked Questions
Is WD Purple 8TB Surveillance Internal Hard Drive HDD - SATA 6Gb/s 256MB Cache 3.5 Inch - WD85PURZ or Seagate Expansion 8TB External Hard Drive HDD - USB 3.0, with Rescue Data Recovery Services (STKP8000400) a better deal?
As of August 2026, Seagate Expansion 8TB External Hard Drive HDD - USB 3.0, with Rescue Data Recovery Services (STKP8000400) offers better value at $0.0325//GB compared to WD Purple 8TB Surveillance Internal Hard Drive HDD - SATA 6Gb/s 256MB Cache 3.5 Inch - WD85PURZ at $0.0513//GB. That is approximately 37% better value per gigabyte.
What is the price per GB of WD Purple 8TB Surveillance Internal Hard Drive HDD - SATA 6Gb/s 256MB Cache 3.5 Inch - WD85PURZ?
The WD Purple 8TB Surveillance Internal Hard Drive HDD - SATA 6Gb/s 256MB Cache 3.5 Inch - WD85PURZ is currently priced at $0.0513/GB ($410.30 for 8TB) at Newegg.
Where can I buy Seagate Expansion 8TB External Hard Drive HDD - USB 3.0, with Rescue Data Recovery Services (STKP8000400) for the cheapest price?
The cheapest price for the Seagate Expansion 8TB External Hard Drive HDD - USB 3.0, with Rescue Data Recovery Services (STKP8000400) is $259.99 at Amazon, which works out to $0.0325/GB.