The UnionSine Desktop External Hard Drive 10TB, USB3.0 3.5" HDD Storage costs $0.0306/GB while the WD Purple Pro WD121PURP 12TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive costs $0.0579/GB. UnionSine Desktop External Hard Drive 10TB, USB3.0 3.5" HDD Storage offers 47% better value per gigabyte as of August 2026. Both products are available on BuyPerUnit with prices from Amazon, Best Buy, and Newegg.
UnionSine Desktop External Hard Drive 10TB, USB3.0 3.5" HDD Storage vs WD Purple Pro WD121PURP 12TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive — Which Is Better Value?
Prices refresh twice daily; the final price appears at the retailer's checkout. We may earn a commission from retailer links, at no cost to you; it never affects rankings.
Specification Comparison
| Spec | UnionSine Desktop External Hard Drive 10TB, USB3.0 3.5" HDD Storage | WD Purple Pro WD121PURP 12TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive |
|---|---|---|
| Brand | UnionSine | Western Digital |
| Capacity | 10 TB | 12TB |
| $/GB | $0.0306 | $0.0579 |
| Price | $305.99 | $694.45 |
| Retailer | Amazon | Newegg |
| Category | Hard Drives (HDD) | Hard Drives (HDD) |
| Subcategory | hdd | hdd |
Price Across Retailers
Which Should You Buy?
Based on current pricing data, the UnionSine Desktop External Hard Drive 10TB, USB3.0 3.5" HDD Storage offers better value at $0.0306//GB compared to the WD Purple Pro WD121PURP 12TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive at $0.0579//GB — that's roughly 47% less per gigabyte.
The best deal for the UnionSine Desktop External Hard Drive 10TB, USB3.0 3.5" HDD Storage is $305.99 at Amazon, while the WD Purple Pro WD121PURP 12TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive starts at $694.45 at Newegg.
However, price per gigabyte isn't everything — consider factors like warranty, performance specs, brand reliability, and your specific capacity needs. Check each UnionSine Desktop External Hard Drive 10TB, USB3.0 3.5" HDD Storage and WD Purple Pro WD121PURP 12TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive product page for detailed specifications and price history.
Frequently Asked Questions
Is UnionSine Desktop External Hard Drive 10TB, USB3.0 3.5" HDD Storage or WD Purple Pro WD121PURP 12TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive a better deal?
As of August 2026, UnionSine Desktop External Hard Drive 10TB, USB3.0 3.5" HDD Storage offers better value at $0.0306//GB compared to WD Purple Pro WD121PURP 12TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive at $0.0579//GB. That is approximately 47% better value per gigabyte.
What is the price per GB of UnionSine Desktop External Hard Drive 10TB, USB3.0 3.5" HDD Storage?
The UnionSine Desktop External Hard Drive 10TB, USB3.0 3.5" HDD Storage is currently priced at $0.0306/GB ($305.99 for 10 TB) at Amazon.
Where can I buy WD Purple Pro WD121PURP 12TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive for the cheapest price?
The cheapest price for the WD Purple Pro WD121PURP 12TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive is $694.45 at Newegg, which works out to $0.0579/GB.