Pricing
CATALOG
Class average, best price per GB:
SATA
$0.138
→ Holding (+2.9% since last reported)
Gen 4
$0.184
→ Holding (0.0% since last reported)
Gen 5
$0.199
→ Holding (−2.5% since last reported)
Snapshot Nov 2, 2026
Filters
Sorting all capacities by $/GB favors larger drives. Pick a capacity to compare like with like.
Drive
Capacity
Best price
$/GB
vs Class
Trend
Lexar SL500 USB 3.2 Gen2x2 (20 Gbps)
USB 20 Gbps · External
2TB
$279
at Walmart.
Lowest tracked price
$0.140
/GB
Lexar SL500 USB 3.2 Gen2x2 (20 Gbps)
USB 20 Gbps · External
1TB
$159
at Walmart.
Lowest tracked price
$0.159
/GB
Down 3% vs last cycle
4TB
$809
at Walmart.
Lowest tracked price
$0.202
/GB
2TB
$409
at Walmart.
Lowest tracked price
$0.205
/GB
Lexar ARMOR 700 USB 3.2 Gen2x2 (20 Gbps)
USB 20 Gbps · External
4TB
$834
at Walmart.
Lowest tracked price
$0.209
/GB
Lexar ARMOR 700 USB 3.2 Gen2x2 (20 Gbps)
USB 20 Gbps · External
2TB
$434
at Walmart.
Lowest tracked price
$0.217
/GB
Lexar SL500 USB 3.2 Gen2x2 (20 Gbps)
USB 20 Gbps · External
4TB
$899
at Walmart.
Lowest tracked price
$0.225
/GB
1TB
$229
at Walmart.
Lowest tracked price
$0.229
/GB
SAMSUNG T9 USB 3.2 Gen2x2 (20 Gbps)
USB 20 Gbps · External
2TB
$489
/
$574
15% OFF
at Walmart.
Lowest tracked price
$0.245
/GB
2TB
$499
at Walmart.
Lowest in ~1 month ($447)
$0.250
/GB
Down 13% vs last cycle
SAMSUNG T9 USB 3.2 Gen2x2 (20 Gbps)
USB 20 Gbps · External
1TB
$269
/
$287
6% OFF
at Walmart.
Lowest in ~1 month ($252)
$0.269
/GB
Lexar ARMOR 700 USB 3.2 Gen2x2 (20 Gbps)
USB 20 Gbps · External
1TB
$274
at Walmart.
Lowest tracked price
$0.274
/GB
SAMSUNG T9 USB 3.2 Gen2x2 (20 Gbps)
USB 20 Gbps · External
4TB
$1,144
at Walmart.
Lowest in ~23 days ($981)
$0.286
/GB
500GB
$159
at Walmart.
Lowest tracked price
$0.318
/GB
$119
at Walmart.
Lowest tracked price
/GB
15 of 15
About the Scores
Every drive in our catalog meets a minimum performance bar; drives below it aren't listed. The score answers one question: how much of its interface's potential does this drive actually deliver? It's based on published read and write speeds, whether smaller capacities keep the same write speed, and whether the drive has a DRAM cache, each measured against the best drive on the same interface. Because scores are relative to the interface, a Gen3 drive and a Gen5 drive can both score near 10 even though the Gen5 drive is much faster. To compare like with like, filter by interface class.