Sanfeya vs Unionsine USB Flash Drives
Side-by-side price per gigabyte comparison across 3 products.
As of March 2026, Sanfeya averages $0.3279/GB across 2 products while Unionsine averages $0.2804/GB across 1 products on BuyPerUnit. Unionsine offers 14% better value per gigabyte for usb flash drives.
Sanfeya
Unionsine
Better ValueTop Products Compared
| Rank | Brand | Product | Capacity | $/GB | Price | Retailer |
|---|---|---|---|---|---|---|
| 1 | Sanfeya | 64GB USB C Flash Drive, 2-in-1 OTG USB 3.0 Thumb Drive, Dual USB Memory Stick Pen Drive for Type-C Android Smartphones Tablets and New MacBook Laptop PC PDA Samsung, Black | 64 GB | $0.2498 | $15.99 | amazon |
| 1 | Unionsine | UnionSine USB C External SSD 128GB, USB3.2 Solid State Flash Drive Up to 450MB/s, Mini Type-C USB Drive SSD-Stick for iPhone 15/16/17 Series, Android Phone, Laptop, Tablet, TV, Car Audio | 128 GB | $0.2804 | $35.89 | amazon |
| 2 | Sanfeya | 32GB USB C Flash Drive, 2-in-1 OTG USB 3.0 Thumb Drive, Dual USB Memory Stick Pen Drive for Type-C Android Smartphones Tablets and New MacBook Laptop PC PDA Samsung, Black | 32 GB | $0.4059 | $12.99 | amazon |
Which Should You Buy?
Based on current pricing data, Unionsine offers better overall value for usb flash drives at an average of $0.2804/GB compared to Sanfeya's $0.3279/GB — that's roughly 14% less per gigabyte.
Unionsine's best deal is the UnionSine USB C External SSD 128GB, USB3.2 Solid State Flash Drive Up to 450MB/s, Mini Type-C USB Drive SSD-Stick for iPhone 15/16/17 Series, Android Phone, Laptop, Tablet, TV, Car Audio (128 GB) at $0.2804/GB, while Sanfeya's cheapest option is the 64GB USB C Flash Drive, 2-in-1 OTG USB 3.0 Thumb Drive, Dual USB Memory Stick Pen Drive for Type-C Android Smartphones Tablets and New MacBook Laptop PC PDA Samsung, Black (64 GB) at $0.2498/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 Sanfeya or Unionsine cheaper per GB for usb flash drives?
As of March 2026, Unionsine averages $0.2804/GB compared to Sanfeya at $0.3279/GB. Unionsine is approximately 14% cheaper per gigabyte on average.
How many Sanfeya and Unionsine usb flash drives does BuyPerUnit track?
BuyPerUnit currently tracks 2 Sanfeya products and 1 Unionsine products in the usb flash drives category, all ranked by price per gigabyte.
What is the cheapest Sanfeya usb flash drive per GB?
The cheapest Sanfeya option is the 64GB USB C Flash Drive, 2-in-1 OTG USB 3.0 Thumb Drive, Dual USB Memory Stick Pen Drive for Type-C Android Smartphones Tablets and New MacBook Laptop PC PDA Samsung, Black at $0.2498/GB ($15.99 for 64 GB).
What is the cheapest Unionsine usb flash drive per GB?
The cheapest Unionsine option is the UnionSine USB C External SSD 128GB, USB3.2 Solid State Flash Drive Up to 450MB/s, Mini Type-C USB Drive SSD-Stick for iPhone 15/16/17 Series, Android Phone, Laptop, Tablet, TV, Car Audio at $0.2804/GB ($35.89 for 128 GB).