The Avolusion PRO-T5 4TB USB 3.0 External Hard Drive for Windows & Mac OS (White) - 2 Year Warranty costs $0.0350/GB while the UnionSine 500GB Ultra Slim Portable External Hard Drive HDD-USB 3.0 costs $0.0749/GB. Avolusion PRO-T5 4TB USB 3.0 External Hard Drive for Windows & Mac OS (White) - 2 Year Warranty offers 53% better value per gigabyte as of September 2026. Both products are available on BuyPerUnit with prices from Amazon, Best Buy, and Newegg.
Avolusion PRO-T5 4TB USB 3.0 External Hard Drive for Windows & Mac OS (White) - 2 Year Warranty vs UnionSine 500GB Ultra Slim Portable External Hard Drive HDD-USB 3.0 — Which Is Better Value?
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Specification Comparison
| Spec | Avolusion PRO-T5 4TB USB 3.0 External Hard Drive for Windows & Mac OS (White) - 2 Year Warranty | UnionSine 500GB Ultra Slim Portable External Hard Drive HDD-USB 3.0 |
|---|---|---|
| Brand | Avolusion | UnionSine |
| Capacity | 4 TB | 500 GB |
| $/GB | $0.0350 | $0.0749 |
| Price | $139.99 | $37.46 |
| Retailer | Amazon | Amazon |
| Category | Hard Drives (HDD) | Hard Drives (HDD) |
| Subcategory | hdd | hdd |
Price Across Retailers
Which Should You Buy?
Based on current pricing data, the Avolusion PRO-T5 4TB USB 3.0 External Hard Drive for Windows & Mac OS (White) - 2 Year Warranty offers better value at $0.0350//GB compared to the UnionSine 500GB Ultra Slim Portable External Hard Drive HDD-USB 3.0 at $0.0749//GB — that's roughly 53% less per gigabyte.
The best deal for the Avolusion PRO-T5 4TB USB 3.0 External Hard Drive for Windows & Mac OS (White) - 2 Year Warranty is $139.99 at Amazon, while the UnionSine 500GB Ultra Slim Portable External Hard Drive HDD-USB 3.0 starts at $37.46 at Amazon.
However, price per gigabyte isn't everything — consider factors like warranty, performance specs, brand reliability, and your specific capacity needs. Check each Avolusion PRO-T5 4TB USB 3.0 External Hard Drive for Windows & Mac OS (White) - 2 Year Warranty and UnionSine 500GB Ultra Slim Portable External Hard Drive HDD-USB 3.0 product page for detailed specifications and price history.
Frequently Asked Questions
Is Avolusion PRO-T5 4TB USB 3.0 External Hard Drive for Windows & Mac OS (White) - 2 Year Warranty or UnionSine 500GB Ultra Slim Portable External Hard Drive HDD-USB 3.0 a better deal?
As of September 2026, Avolusion PRO-T5 4TB USB 3.0 External Hard Drive for Windows & Mac OS (White) - 2 Year Warranty offers better value at $0.0350//GB compared to UnionSine 500GB Ultra Slim Portable External Hard Drive HDD-USB 3.0 at $0.0749//GB. That is approximately 53% better value per gigabyte.
What is the price per GB of Avolusion PRO-T5 4TB USB 3.0 External Hard Drive for Windows & Mac OS (White) - 2 Year Warranty?
The Avolusion PRO-T5 4TB USB 3.0 External Hard Drive for Windows & Mac OS (White) - 2 Year Warranty is currently priced at $0.0350/GB ($139.99 for 4 TB) at Amazon.
Where can I buy UnionSine 500GB Ultra Slim Portable External Hard Drive HDD-USB 3.0 for the cheapest price?
The cheapest price for the UnionSine 500GB Ultra Slim Portable External Hard Drive HDD-USB 3.0 is $37.46 at Amazon, which works out to $0.0749/GB.