Prime Big Deal Days has ended, here is what is still at its low.
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Quick answer
The lowest CA$122.50/TB here today is the Ediloca ES580E SATA III s 2.5 at CA$489.99, listed as new. Verdict: real low. Our lowest recorded price for it is CA$489.99 on 2026-10-07.
The cheapest 4TB rows are usually QLC drives, so a genuine low at this capacity can still be the wrong drive for sustained writes. The verdict rates the price, not the cell type.
For the cheapest row on this page we have recorded a low of CA$489.99 on 2026-10-07, across 13 days of our own checks.
2026 is a shortage year for both hard-drive platters and NAND, and several list prices were raised earlier in the year before being discounted during this event. A percentage off a raised list price is not the same as a low, which is why every row here is compared against what we recorded for that exact item instead.
The cheapest new 4 TB listing today works out at CA$108.41/TB.
The cheapest external route to 4 TB is CA$108.41/TB, which you would have to open the enclosure to use as a bare drive.
What the verdicts mean
Real low
At or below the lowest price we have recorded for this item.
Near its low
Within three percent of the lowest price we have recorded.
List-price cut
Cut against Amazon's own reference price, but still above the lowest price we have recorded.
Not a deal
Above our 30-day median for this item.
No history yet
We have fewer than seven days of our own price checks for this item.
4TB used to carry an obvious density penalty and no longer always does. The 990 EVO Plus at 4TB and WD's Blue SN5000 at the same size have brought the per-terabyte figure close to 2TB, while the 990 Pro 4TB still prices as a premium part. The trade is usually QLC against TLC: the cheaper 4TB drives lean on quad-level cells and slow markedly once the write cache fills, which matters for video work and barely registers for a games library. Read the verdict and the model together here.
Frequently asked questions
Is 4TB finally competitive with 2TB per terabyte?
It is close on the value models, which was not true a year ago. The 990 EVO Plus and the Blue SN5000 at 4TB have narrowed the gap, while the flagship 4TB drives still charge a clear premium.
What does QLC cost me in practice?
Sustained write speed after the cache fills, which can drop to hard-drive territory on a long copy. For installing games and general storage it is rarely noticeable; for editing video off the drive it is.
Is one 4TB drive better than two 2TB drives?
It frees an M.2 slot and simplifies the build, and in 2026 the price gap is small enough that it is a reasonable choice. Two 2TB drives still usually win on raw cost per terabyte and give you a second controller.
Can a 4TB NVMe drive go in a PS5?
Yes, if it is Gen4 with adequate heat dissipation. Our PS5 page filters to drives that meet Sony's read-speed requirement and flags which ones include a heatsink.
Last updated: 2026-10-31 06:02:04 UTC. As an Amazon Associate we earn from qualifying purchases. Product prices and availability are accurate as of the date indicated on Amazon.ca and are subject to change. Any price displayed at the time of purchase will apply. CERTAIN CONTENT THAT APPEARS ON THIS SITE COMES FROM AMAZON SERVICES LLC. THIS CONTENT IS PROVIDED AS IS AND IS SUBJECT TO CHANGE OR REMOVAL AT ANY TIME.