The MG09ACA18TE 18TB - Toshiba 7200RPM 512e 3.5' SATA costs $0.0436/GB while the Seagate Expansion Desktop 16TB External Hard Drive – USB 3.0, 3.5" HDD for Windows & Mac, Plug-and-Play Backup Storage - STKP16000400 costs $0.0303/GB. Seagate Expansion Desktop 16TB External Hard Drive – USB 3.0, 3.5" HDD for Windows & Mac, Plug-and-Play Backup Storage - STKP16000400 offers 31% better value per gigabyte as of July 2026. Both products are available on BuyPerUnit with prices from Amazon, Best Buy, and Newegg.
MG09ACA18TE 18TB - Toshiba 7200RPM 512e 3.5' SATA vs Seagate Expansion Desktop 16TB External Hard Drive – USB 3.0, 3.5" HDD for Windows & Mac, Plug-and-Play Backup Storage - STKP16000400 — Which Is Better Value?
Specification Comparison
| Spec | MG09ACA18TE 18TB - Toshiba 7200RPM 512e 3.5' SATA | Seagate Expansion Desktop 16TB External Hard Drive – USB 3.0, 3.5" HDD for Windows & Mac, Plug-and-Play Backup Storage - STKP16000400 |
|---|---|---|
| Brand | Toshiba | Seagate |
| Capacity | 18TB | 16 TB |
| $/GB | $0.0436 | $0.0303 |
| Price | $785.50 | $485.09 |
| Retailer | Newegg | Amazon |
| 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 Desktop 16TB External Hard Drive – USB 3.0, 3.5" HDD for Windows & Mac, Plug-and-Play Backup Storage - STKP16000400 offers better value at $0.0303//GB compared to the MG09ACA18TE 18TB - Toshiba 7200RPM 512e 3.5' SATA at $0.0436//GB — that's roughly 31% less per gigabyte.
The best deal for the Seagate Expansion Desktop 16TB External Hard Drive – USB 3.0, 3.5" HDD for Windows & Mac, Plug-and-Play Backup Storage - STKP16000400 is $485.09 at Amazon, while the MG09ACA18TE 18TB - Toshiba 7200RPM 512e 3.5' SATA starts at $785.50 at Newegg.
However, price per gigabyte isn't everything — consider factors like warranty, performance specs, brand reliability, and your specific capacity needs. Check each MG09ACA18TE 18TB - Toshiba 7200RPM 512e 3.5' SATA and Seagate Expansion Desktop 16TB External Hard Drive – USB 3.0, 3.5" HDD for Windows & Mac, Plug-and-Play Backup Storage - STKP16000400 product page for detailed specifications and price history.
Frequently Asked Questions
Is MG09ACA18TE 18TB - Toshiba 7200RPM 512e 3.5' SATA or Seagate Expansion Desktop 16TB External Hard Drive – USB 3.0, 3.5" HDD for Windows & Mac, Plug-and-Play Backup Storage - STKP16000400 a better deal?
As of July 2026, Seagate Expansion Desktop 16TB External Hard Drive – USB 3.0, 3.5" HDD for Windows & Mac, Plug-and-Play Backup Storage - STKP16000400 offers better value at $0.0303//GB compared to MG09ACA18TE 18TB - Toshiba 7200RPM 512e 3.5' SATA at $0.0436//GB. That is approximately 31% better value per gigabyte.
What is the price per GB of MG09ACA18TE 18TB - Toshiba 7200RPM 512e 3.5' SATA?
The MG09ACA18TE 18TB - Toshiba 7200RPM 512e 3.5' SATA is currently priced at $0.0436/GB ($785.50 for 18TB) at Newegg.
Where can I buy Seagate Expansion Desktop 16TB External Hard Drive – USB 3.0, 3.5" HDD for Windows & Mac, Plug-and-Play Backup Storage - STKP16000400 for the cheapest price?
The cheapest price for the Seagate Expansion Desktop 16TB External Hard Drive – USB 3.0, 3.5" HDD for Windows & Mac, Plug-and-Play Backup Storage - STKP16000400 is $485.09 at Amazon, which works out to $0.0303/GB.