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 while the Apricorn Aegis Padlock 18 TB FIPS 256-BIT AES External Hard Drive ADT3PL256F18TB costs $0.0532/GB. WD Ultrastar DC HC550 18TB Hard Drive 3.5' Internal 512MB SATA 7200 RPM 512E SE NP3 DC HC550 0F38459 (WUH721818ALE6L4) offers 34% better value per gigabyte as of July 2026. Both products are available on BuyPerUnit with prices from Amazon, Best Buy, and Newegg.
WD Ultrastar DC HC550 18TB Hard Drive 3.5' Internal 512MB SATA 7200 RPM 512E SE NP3 DC HC550 0F38459 (WUH721818ALE6L4) vs Apricorn Aegis Padlock 18 TB FIPS 256-BIT AES External Hard Drive ADT3PL256F18TB — Which Is Better Value?
Specification Comparison
| Spec | WD Ultrastar DC HC550 18TB Hard Drive 3.5' Internal 512MB SATA 7200 RPM 512E SE NP3 DC HC550 0F38459 (WUH721818ALE6L4) | Apricorn Aegis Padlock 18 TB FIPS 256-BIT AES External Hard Drive ADT3PL256F18TB |
|---|---|---|
| Brand | Western Digital | Apricorn |
| Capacity | 18TB | 18TB |
| $/GB | $0.0353 | $0.0532 |
| Price | $635.07 | $957.99 |
| 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 WD Ultrastar DC HC550 18TB Hard Drive 3.5' Internal 512MB SATA 7200 RPM 512E SE NP3 DC HC550 0F38459 (WUH721818ALE6L4) offers better value at $0.0353//GB compared to the Apricorn Aegis Padlock 18 TB FIPS 256-BIT AES External Hard Drive ADT3PL256F18TB at $0.0532//GB — that's roughly 34% less per gigabyte.
The best deal 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, while the Apricorn Aegis Padlock 18 TB FIPS 256-BIT AES External Hard Drive ADT3PL256F18TB starts at $957.99 at Newegg.
However, price per gigabyte isn't everything — consider factors like warranty, performance specs, brand reliability, and your specific capacity needs. Check each WD Ultrastar DC HC550 18TB Hard Drive 3.5' Internal 512MB SATA 7200 RPM 512E SE NP3 DC HC550 0F38459 (WUH721818ALE6L4) and Apricorn Aegis Padlock 18 TB FIPS 256-BIT AES External Hard Drive ADT3PL256F18TB product page for detailed specifications and price history.
Frequently Asked Questions
Is WD Ultrastar DC HC550 18TB Hard Drive 3.5' Internal 512MB SATA 7200 RPM 512E SE NP3 DC HC550 0F38459 (WUH721818ALE6L4) or Apricorn Aegis Padlock 18 TB FIPS 256-BIT AES External Hard Drive ADT3PL256F18TB a better deal?
As of July 2026, WD Ultrastar DC HC550 18TB Hard Drive 3.5' Internal 512MB SATA 7200 RPM 512E SE NP3 DC HC550 0F38459 (WUH721818ALE6L4) offers better value at $0.0353//GB compared to Apricorn Aegis Padlock 18 TB FIPS 256-BIT AES External Hard Drive ADT3PL256F18TB at $0.0532//GB. That is approximately 34% better value per gigabyte.
What is the price per GB of WD Ultrastar DC HC550 18TB Hard Drive 3.5' Internal 512MB SATA 7200 RPM 512E SE NP3 DC HC550 0F38459 (WUH721818ALE6L4)?
The WD Ultrastar DC HC550 18TB Hard Drive 3.5' Internal 512MB SATA 7200 RPM 512E SE NP3 DC HC550 0F38459 (WUH721818ALE6L4) is currently priced at $0.0353/GB ($635.07 for 18TB) at Newegg.
Where can I buy Apricorn Aegis Padlock 18 TB FIPS 256-BIT AES External Hard Drive ADT3PL256F18TB for the cheapest price?
The cheapest price for the Apricorn Aegis Padlock 18 TB FIPS 256-BIT AES External Hard Drive ADT3PL256F18TB is $957.99 at Newegg, which works out to $0.0532/GB.