Unionsine vs Western Digital Hard Drives & SSDs

Side-by-side price per gigabyte comparison across 99 products.

As of March 2026, Unionsine averages $0.0665/GB across 2 products while Western Digital averages $0.1178/GB across 97 products on BuyPerUnit. Unionsine offers 44% better value per gigabyte for hard drives & ssds.

Unionsine

Better Value

Avg $/GB$0.0665

Best $/GB$0.0615

Price Range$0.0615 – $0.0715

Products2

Cheapest Product

UnionSine 500GB Ultra Slim Portable External Hard Drive HDD-USB 3.0 for PC, Mac, Laptop, PS4, Xbox one, Xbox 360-(Black)

500 GB · $30.73 · amazon

Western Digital

Avg $/GB$0.1178

Best $/GB$0.0217

Price Range$0.0217 – $1.1990

Products97

Cheapest Product

WD - easystore 18TB External USB 3.0 Hard Drive - Black

18 TB · $389.99 · bestbuy

Top Products Compared

Rank	Brand	Product	Capacity	$/GB	Price	Retailer
1	Unionsine	UnionSine 500GB Ultra Slim Portable External Hard Drive HDD-USB 3.0 for PC, Mac, Laptop, PS4, Xbox one, Xbox 360-(Black)	500 GB	$0.0615	$30.73	amazon
1	Western Digital	WD - easystore 18TB External USB 3.0 Hard Drive - Black	18 TB	$0.0217	$389.99	bestbuy
2	Unionsine	UnionSine 500GB Ultra Slim Portable External Hard Drive HDD-USB 3.0 for PC, Mac, Laptop, PS4, Xbox one, Xbox 360-(Pink)	500 GB	$0.0715	$35.73	amazon
2	Western Digital	WD - easystore 20TB External USB 3.0 Hard Drive - Black	20 TB	$0.0220	$439.99	bestbuy
3	Western Digital	WD 16TB My Book Desktop External Hard Drive, USB 3.0, External HDD with Password Protection and Backup Software - WDBBGB0160HBK-NESN	16 TB	$0.0225	$360.49	amazon
4	Western Digital	WD 18TB My Book Desktop External Hard Drive, USB 3.0, External HDD with Password Protection and Auto Backup Software - WDBBGB0180HBK-NESN	18 TB	$0.0233	$419.99	amazon
5	Western Digital	Western Digital 10TB WD Blue Internal Hard Drive HDD - 7200 RPM, SATA 6 Gb/s, 512 MB Cache, 3.5" - WD100EAGZ	10 TB	$0.0240	$239.99	amazon

Which Should You Buy?

Based on current pricing data, Unionsine offers better overall value for hard drives & ssds at an average of $0.0665/GB compared to Western Digital's $0.1178/GB — that's roughly 44% less per gigabyte.

Unionsine's best deal is the UnionSine 500GB Ultra Slim Portable External Hard Drive HDD-USB 3.0 for PC, Mac, Laptop, PS4, Xbox one, Xbox 360-(Black) (500 GB) at $0.0615/GB, while Western Digital's cheapest option is the WD - easystore 18TB External USB 3.0 Hard Drive - Black (18 TB) at $0.0217/GB.

However, price per GB isn't everything — consider factors like warranty, performance specs, and your specific capacity needs. Check individual product pages for detailed specifications.

Frequently Asked Questions

Is Unionsine or Western Digital cheaper per GB for hard drives & ssds?

As of March 2026, Unionsine averages $0.0665/GB compared to Western Digital at $0.1178/GB. Unionsine is approximately 44% cheaper per gigabyte on average.

How many Unionsine and Western Digital hard drives & ssds does BuyPerUnit track?

BuyPerUnit currently tracks 2 Unionsine products and 97 Western Digital products in the hard drives & ssds category, all ranked by price per gigabyte.

What is the cheapest Unionsine hard drives & ssd per GB?

The cheapest Unionsine option is the UnionSine 500GB Ultra Slim Portable External Hard Drive HDD-USB 3.0 for PC, Mac, Laptop, PS4, Xbox one, Xbox 360-(Black) at $0.0615/GB ($30.73 for 500 GB).

What is the cheapest Western Digital hard drives & ssd per GB?

The cheapest Western Digital option is the WD - easystore 18TB External USB 3.0 Hard Drive - Black at $0.0217/GB ($389.99 for 18 TB).

Explore More

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