The SANDISK - Extreme Pro 128GB SDXC UHS-I National Parks costs $0.5859/GB while the WD - Purple 4TB Surveillance Internal Hard Drive costs $0.0350/GB. WD - Purple 4TB Surveillance Internal Hard Drive offers 94% better value per gigabyte as of May 2026. Both products are available on BuyPerUnit with prices from Amazon, Best Buy, and Newegg.
SANDISK - Extreme Pro 128GB SDXC UHS-I National Parks vs WD - Purple 4TB Surveillance Internal Hard Drive — Which Is Better Value?
WD - Purple 4TB Surveillance Internal Hard Drive
Specification Comparison
| Spec | SANDISK - Extreme Pro 128GB SDXC UHS-I National Parks | WD - Purple 4TB Surveillance Internal Hard Drive |
|---|---|---|
| Brand | SanDisk | Western Digital |
| Capacity | 128 GB | 4 TB |
| $/GB | $0.5859 | $0.0350 |
| Price | $74.99 | $139.99 |
| Retailer | Best Buy | Best Buy |
| Category | Hard Drives (HDD) | Hard Drives (HDD) |
| Subcategory | micro-sd | hdd |
Price Across Retailers
Which Should You Buy?
Based on current pricing data, the WD - Purple 4TB Surveillance Internal Hard Drive offers better value at $0.0350//GB compared to the SANDISK - Extreme Pro 128GB SDXC UHS-I National Parks at $0.5859//GB — that's roughly 94% less per gigabyte.
The best deal for the WD - Purple 4TB Surveillance Internal Hard Drive is $139.99 at Best Buy, while the SANDISK - Extreme Pro 128GB SDXC UHS-I National Parks starts at $74.99 at Best Buy.
However, price per gigabyte isn't everything — consider factors like warranty, performance specs, brand reliability, and your specific capacity needs. Check each SANDISK - Extreme Pro 128GB SDXC UHS-I National Parks and WD - Purple 4TB Surveillance Internal Hard Drive product page for detailed specifications and price history.
Frequently Asked Questions
Is SANDISK - Extreme Pro 128GB SDXC UHS-I National Parks or WD - Purple 4TB Surveillance Internal Hard Drive a better deal?
As of May 2026, WD - Purple 4TB Surveillance Internal Hard Drive offers better value at $0.0350//GB compared to SANDISK - Extreme Pro 128GB SDXC UHS-I National Parks at $0.5859//GB. That is approximately 94% better value per gigabyte.
What is the price per GB of SANDISK - Extreme Pro 128GB SDXC UHS-I National Parks?
The SANDISK - Extreme Pro 128GB SDXC UHS-I National Parks is currently priced at $0.5859/GB ($74.99 for 128 GB) at Best Buy.
Where can I buy WD - Purple 4TB Surveillance Internal Hard Drive for the cheapest price?
The cheapest price for the WD - Purple 4TB Surveillance Internal Hard Drive is $139.99 at Best Buy, which works out to $0.0350/GB.