The SanDisk Professional 18TB G-DRIVE PROJECT Thunderbolt 3 External Hard Drive costs $0.0681/GB while the Seagate SkyHawk AI ST18000VE002 18 TB Hard Drive 3.5' Internal SATA SATA/600 costs $0.0370/GB. Seagate SkyHawk AI ST18000VE002 18 TB Hard Drive 3.5' Internal SATA SATA/600 offers 46% better value per gigabyte as of August 2026. Both products are available on BuyPerUnit with prices from Amazon, Best Buy, and Newegg.
SanDisk Professional 18TB G-DRIVE PROJECT Thunderbolt 3 External Hard Drive vs Seagate SkyHawk AI ST18000VE002 18 TB Hard Drive 3.5' Internal SATA SATA/600 — 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 | SanDisk Professional 18TB G-DRIVE PROJECT Thunderbolt 3 External Hard Drive | Seagate SkyHawk AI ST18000VE002 18 TB Hard Drive 3.5' Internal SATA SATA/600 |
|---|---|---|
| Brand | SanDisk | Seagate |
| Capacity | 18TB | 18TB |
| $/GB | $0.0681 | $0.0370 |
| Price | $1224.99 | $666.10 |
| Retailer | Newegg | Newegg |
| Category | Hard Drives (HDD) | Hard Drives (HDD) |
| Subcategory | hdd | hdd |
Price Across Retailers
Which Should You Buy?
Based on current pricing data, the Seagate SkyHawk AI ST18000VE002 18 TB Hard Drive 3.5' Internal SATA SATA/600 offers better value at $0.0370//GB compared to the SanDisk Professional 18TB G-DRIVE PROJECT Thunderbolt 3 External Hard Drive at $0.0681//GB — that's roughly 46% less per gigabyte.
The best deal for the Seagate SkyHawk AI ST18000VE002 18 TB Hard Drive 3.5' Internal SATA SATA/600 is $666.10 at Newegg, while the SanDisk Professional 18TB G-DRIVE PROJECT Thunderbolt 3 External Hard Drive starts at $1224.99 at Newegg.
However, price per gigabyte isn't everything — consider factors like warranty, performance specs, brand reliability, and your specific capacity needs. Check each SanDisk Professional 18TB G-DRIVE PROJECT Thunderbolt 3 External Hard Drive and Seagate SkyHawk AI ST18000VE002 18 TB Hard Drive 3.5' Internal SATA SATA/600 product page for detailed specifications and price history.
Frequently Asked Questions
Is SanDisk Professional 18TB G-DRIVE PROJECT Thunderbolt 3 External Hard Drive or Seagate SkyHawk AI ST18000VE002 18 TB Hard Drive 3.5' Internal SATA SATA/600 a better deal?
As of August 2026, Seagate SkyHawk AI ST18000VE002 18 TB Hard Drive 3.5' Internal SATA SATA/600 offers better value at $0.0370//GB compared to SanDisk Professional 18TB G-DRIVE PROJECT Thunderbolt 3 External Hard Drive at $0.0681//GB. That is approximately 46% better value per gigabyte.
What is the price per GB of SanDisk Professional 18TB G-DRIVE PROJECT Thunderbolt 3 External Hard Drive?
The SanDisk Professional 18TB G-DRIVE PROJECT Thunderbolt 3 External Hard Drive is currently priced at $0.0681/GB ($1224.99 for 18TB) at Newegg.
Where can I buy Seagate SkyHawk AI ST18000VE002 18 TB Hard Drive 3.5' Internal SATA SATA/600 for the cheapest price?
The cheapest price for the Seagate SkyHawk AI ST18000VE002 18 TB Hard Drive 3.5' Internal SATA SATA/600 is $666.10 at Newegg, which works out to $0.0370/GB.