Sell Your WD Black SN850X 4TB NVMe
Updated July 7, 2026
per unit, non-binding indicative range
Non-binding — firm quote in 4 business hours.
What condition pays what
| Condition | Means | Pays |
|---|---|---|
| Grade A | ≥90% life, zero reallocated sectors | $150–$200 |
| Grade B | 70-89% life, ≤5 reallocated | $113–$150 |
| Grade C | 50-69% life, functional | $68–$90 |
| Grade F | SMART warnings or <50% — free return or recycle | declined |
What each brand pays
Brand changes what used drives are worth — Samsung sets the benchmark, then the other tier-one makers, and value brands pay a little less. We still buy every brand on this list.
| Brand | Indicative payout |
|---|---|
| Samsungbest price | $150–$200 |
| Intel Legacy data-center SSD leader; excellent buyer trust. | $146–$194 |
| Solidigm Intel's spun-off NAND business; enterprise-grade demand. | $146–$194 |
| Micron Tier-1 enterprise NAND (7450/9400 class). | $140–$186 |
| Kioxia Former Toshiba memory; strong enterprise NVMe demand. | $140–$186 |
| SK Hynix Tier-1 NAND; solid enterprise and client demand. | $138–$184 |
| WD/HGST Western Digital / HGST enterprise and client drives; good liquidity. | $135–$180 |
| Crucial Micron's retail SSD line; consumer-grade resale. | $126–$168 |
| Kingston High-volume consumer/DC drives; softer resale premium. | $123–$164 |
| Other Other or unidentified SSD makers; we still buy, at a lower payout. | $108–$144 |
Ranges are non-binding and scaled from the Samsung benchmark for this exact spec — your firm quote comes by email within 4 business hours.
What this item is
The WD Black SN850X 4TB NVMe is a 4TB consumer SSD. We buy these at 85% health or better and grade from SMART on our bench, so a lightly-used drive is quoted on its measured wear, not guesswork. Every drive is wiped to NIST 800-88 and you get the certificate by email — if it fails our health check we return or recycle it free. Common part numbers include WDS400T2X0E.
Part numbers we buy
- WD/HGST: WDS400T2X0E
Don't see yours? Paste it into the quote form — we match variants daily.
How it works
- Firm quote by email within 4 business hours (Mon–Sat 8–6 ET).
- Ship free with our prepaid label — postmark within your lock window.
- Paid by Zelle, PayPal, or check within 48 hours of testing.
If testing disagrees with your description, you get photo evidence and a choice: revised offer or free return. Every SSD and laptop is erased to NIST 800-88 and you get the certificate by email — free, automatic, every time.
Questions
How much is a WD Black SN850X 4TB NVMe worth in 2026?
Our current indicative payout is $150-$200 per unit in used working condition, with the firm number emailed within 4 business hours of your quote request. The range moves with the market — the Payout Index shows what we actually paid over the trailing 30 days.
How do you grade a used Western Digital SSD?
From the drive's own SMART data at intake — life remaining, reallocated sectors, power-on hours — not from the description. Grade A (≥90% life, zero reallocated) pays the full range; B pays 75%; anything failing health checks is returned or recycled free, your choice.
Is it safe to sell this drive with my data on it?
We erase every drive to NIST 800-88 Purge and email you a serialized certificate with a public verification link, free and automatic. Wiping it yourself first is encouraged too — belt and suspenders — and our guide shows how.
How fast do I actually get paid?
Zelle or PayPal within 48 hours of test completion; typical mail-to-money is 5-7 days end to end. Your quote locks before you ship, and if the market drops after we quote, we pay the quote anyway.