Amazon Basics vs Unirex SD Cards

Side-by-side price per gigabyte comparison across 10 products.

As of March 2026, Amazon Basics averages $0.1839/GB across 4 products while Unirex averages $0.4149/GB across 6 products on BuyPerUnit. Amazon Basics offers 56% better value per gigabyte for sd cards.

Amazon Basics

Better Value

Avg $/GB$0.1839

Best $/GB$0.1555

Price Range$0.1555 – $0.2030

Products4

Cheapest Product

Amazon Basics microSDXC Memory Card with Full Size Adapter, A2, U3, Read Speed up to 100 MB/s, 128GB, Black

128 GB · $19.91 · amazon

Unirex

Avg $/GB$0.4149

Best $/GB$0.1873

Price Range$0.1873 – $0.6244

Products6

Cheapest Product

Unirex UMS645MUHS1 64GB microSDHC Card

64GB · $11.99 · newegg

Top Products Compared

Rank	Brand	Product	Capacity	$/GB	Price	Retailer
1	Amazon Basics	Amazon Basics microSDXC Memory Card with Full Size Adapter, A2, U3, Read Speed up to 100 MB/s, 128GB, Black	128 GB	$0.1555	$19.91	amazon
1	Unirex	Unirex UMS645MUHS1 64GB microSDHC Card	64GB	$0.1873	$11.99	newegg
2	Amazon Basics	Amazon Basics 1TB microSDXC Card with Adapter for Smartphones, Full HD, Tablets, Drones, Action Cameras, Read Speed Up to 200MB/s, 1-Pack	1 TB	$0.1805	$180.50	amazon
2	Unirex	Unirex Full Size SD Card 64GB	64GB	$0.3123	$19.99	newegg
3	Amazon Basics	Amazon Basics microSDXC Memory Card with Full Size Adapter, A2, U3, Read Speed up to 100 MB/s, 256GB, Black	256 GB	$0.1966	$50.33	amazon
3	Unirex	Unirex MSU325 32GB MicroSD Card	32GB	$0.3434	$10.99	newegg
4	Amazon Basics	Amazon Basics 128GB microSDXC Memory Card with Adapter for Smartphones, Drones, Cameras, Full HD, Read Speed Up to 200MB/s, 1-Pack	128 GB	$0.2030	$25.99	amazon
4	Unirex	Unirex MSW325M 4-in-1 Usb/Micro USB Reader and SD Adapter (32GB)	32GB	$0.3975	$12.72	newegg
5	Unirex	Unirex MSU165 16GB MicroSD Card	16GB	$0.6244	$9.99	newegg

Which Should You Buy?

Based on current pricing data, Amazon Basics offers better overall value for sd cards at an average of $0.1839/GB compared to Unirex's $0.4149/GB — that's roughly 56% less per gigabyte.

Amazon Basics's best deal is the Amazon Basics microSDXC Memory Card with Full Size Adapter, A2, U3, Read Speed up to 100 MB/s, 128GB, Black (128 GB) at $0.1555/GB, while Unirex's cheapest option is the Unirex UMS645MUHS1 64GB microSDHC Card (64GB) at $0.1873/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 Amazon Basics or Unirex cheaper per GB for sd cards?

As of March 2026, Amazon Basics averages $0.1839/GB compared to Unirex at $0.4149/GB. Amazon Basics is approximately 56% cheaper per gigabyte on average.

How many Amazon Basics and Unirex sd cards does BuyPerUnit track?

BuyPerUnit currently tracks 4 Amazon Basics products and 6 Unirex products in the sd cards category, all ranked by price per gigabyte.

What is the cheapest Amazon Basics sd card per GB?

The cheapest Amazon Basics option is the Amazon Basics microSDXC Memory Card with Full Size Adapter, A2, U3, Read Speed up to 100 MB/s, 128GB, Black at $0.1555/GB ($19.91 for 128 GB).

What is the cheapest Unirex sd card per GB?

The cheapest Unirex option is the Unirex UMS645MUHS1 64GB microSDHC Card at $0.1873/GB ($11.99 for 64GB).

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