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
SABRENT Rocket XTRM 5 Thunderbolt 5 (80 Gbps)
Thunderbolt / USB4 · External
4TB
$649
at Walmart.
Lowest tracked price
$0.162
/GB
4TB
$799
at Walmart.
Lowest tracked price
$0.200
/GB
4TB
$809
at Walmart.
Lowest tracked price
$0.202
/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 SL500 USB 3.2 Gen2x2 (20 Gbps)
USB 20 Gbps · External
4TB
$899
at Walmart.
Lowest tracked price
$0.225
/GB
4TB
$1,100
at Walmart.
Lowest tracked price
$0.275
/GB
Down 4% vs last cycle
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
4TB
$1,492
at Walmart.
Lowest in ~23 days ($1279)
$0.373
/GB
Down 17% vs last cycle
8 of 8
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.