The Seagate - Expansion 16TB External USB 3.0 Desktop Hard Drive with Rescue Data Recovery Services - Black costs $0.0325/GB while the WD Ultrastar DC HC550 18TB Hard Drive 3.5' Internal 512MB SATA 7200 RPM 512E SE NP3 DC HC550 0F38459 (WUH721818ALE6L4) costs $0.0353/GB. Seagate - Expansion 16TB External USB 3.0 Desktop Hard Drive with Rescue Data Recovery Services - Black offers 8% better value per gigabyte as of July 2026. Both products are available on BuyPerUnit with prices from Amazon, Best Buy, and Newegg.
Seagate - Expansion 16TB External USB 3.0 Desktop Hard Drive with Rescue Data Recovery Services - Black vs WD Ultrastar DC HC550 18TB Hard Drive 3.5' Internal 512MB SATA 7200 RPM 512E SE NP3 DC HC550 0F38459 (WUH721818ALE6L4) — Which Is Better Value?
Specification Comparison
| Spec | Seagate - Expansion 16TB External USB 3.0 Desktop Hard Drive with Rescue Data Recovery Services - Black | WD Ultrastar DC HC550 18TB Hard Drive 3.5' Internal 512MB SATA 7200 RPM 512E SE NP3 DC HC550 0F38459 (WUH721818ALE6L4) |
|---|---|---|
| Brand | Seagate | Western Digital |
| Capacity | 16 TB | 18TB |
| $/GB | $0.0325 | $0.0353 |
| Price | $519.99 | $635.07 |
| Retailer | Best Buy | 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 - Expansion 16TB External USB 3.0 Desktop Hard Drive with Rescue Data Recovery Services - Black offers better value at $0.0325//GB compared to the WD Ultrastar DC HC550 18TB Hard Drive 3.5' Internal 512MB SATA 7200 RPM 512E SE NP3 DC HC550 0F38459 (WUH721818ALE6L4) at $0.0353//GB — that's roughly 8% less per gigabyte.
The best deal for the Seagate - Expansion 16TB External USB 3.0 Desktop Hard Drive with Rescue Data Recovery Services - Black is $519.99 at Best Buy, while the WD Ultrastar DC HC550 18TB Hard Drive 3.5' Internal 512MB SATA 7200 RPM 512E SE NP3 DC HC550 0F38459 (WUH721818ALE6L4) starts at $635.07 at Newegg.
However, price per gigabyte isn't everything — consider factors like warranty, performance specs, brand reliability, and your specific capacity needs. Check each Seagate - Expansion 16TB External USB 3.0 Desktop Hard Drive with Rescue Data Recovery Services - Black and WD Ultrastar DC HC550 18TB Hard Drive 3.5' Internal 512MB SATA 7200 RPM 512E SE NP3 DC HC550 0F38459 (WUH721818ALE6L4) product page for detailed specifications and price history.
Frequently Asked Questions
Is Seagate - Expansion 16TB External USB 3.0 Desktop Hard Drive with Rescue Data Recovery Services - Black or WD Ultrastar DC HC550 18TB Hard Drive 3.5' Internal 512MB SATA 7200 RPM 512E SE NP3 DC HC550 0F38459 (WUH721818ALE6L4) a better deal?
As of July 2026, Seagate - Expansion 16TB External USB 3.0 Desktop Hard Drive with Rescue Data Recovery Services - Black offers better value at $0.0325//GB compared to WD Ultrastar DC HC550 18TB Hard Drive 3.5' Internal 512MB SATA 7200 RPM 512E SE NP3 DC HC550 0F38459 (WUH721818ALE6L4) at $0.0353//GB. That is approximately 8% better value per gigabyte.
What is the price per GB of Seagate - Expansion 16TB External USB 3.0 Desktop Hard Drive with Rescue Data Recovery Services - Black?
The Seagate - Expansion 16TB External USB 3.0 Desktop Hard Drive with Rescue Data Recovery Services - Black is currently priced at $0.0325/GB ($519.99 for 16 TB) at Best Buy.
Where can I buy WD Ultrastar DC HC550 18TB Hard Drive 3.5' Internal 512MB SATA 7200 RPM 512E SE NP3 DC HC550 0F38459 (WUH721818ALE6L4) for the cheapest price?
The cheapest price for the WD Ultrastar DC HC550 18TB Hard Drive 3.5' Internal 512MB SATA 7200 RPM 512E SE NP3 DC HC550 0F38459 (WUH721818ALE6L4) is $635.07 at Newegg, which works out to $0.0353/GB.