# OWC Mercury Helios 3S Thunderbolt 3 PCIe Expansion Solution — resale value

Source: JunkPal price guide — https://junkpal.ai/products/owc-mercury-helios-3s-thunderbolt-3-pcie-expansion-solution-b083v3dkcn

**OWC Mercury Helios 3S Thunderbolt 3 PCIe Expansion Solution** sells for about **$264.99** new or sealed, based on real closed eBay sales.

Live listings and the full sold-price history are on the page: https://junkpal.ai/products/owc-mercury-helios-3s-thunderbolt-3-pcie-expansion-solution-b083v3dkcn

## Value

| Condition | Value (USD) |
| --- | --- |
| New / Sealed | $264.99 |

Values are medians of real closed eBay sales, updated 2026-07-21. They are estimates for reference, not offers or appraisals — condition, completeness and edition move them a lot, so compare against the sold listings before pricing anything.

## Check the market

- [Sold listings on eBay](https://junkpal.ai/api/go?to=https%3A%2F%2Fwww.ebay.com%2Fsch%2Fi.html%3F_nkw%3DOWC%2520Mercury%2520Helios%25203S%2520Thunderbolt%25203%2520PCIe%2520expansion%26LH_Sold%3D1%26LH_Complete%3D1%26mkcid%3D1%26mkrid%3D711-53200-19255-0%26siteid%3D0%26campid%3D5339166094%26toolid%3D10001%26mkevt%3D1%26customid%3Dmd-sold&p=md-sold) — the closed sales these medians are computed from
- [Live listings on eBay](https://junkpal.ai/api/go?to=https%3A%2F%2Fwww.ebay.com%2Fsch%2Fi.html%3F_nkw%3DOWC%2520Mercury%2520Helios%25203S%2520Thunderbolt%25203%2520PCIe%2520expansion%26mkcid%3D1%26mkrid%3D711-53200-19255-0%26siteid%3D0%26campid%3D5339166094%26toolid%3D10001%26mkevt%3D1%26customid%3Dmd-live&p=md-live) — what sellers are asking right now

eBay links are affiliate links: JunkPal may earn a commission at no cost to you.

## Details

| Field | Value |
| --- | --- |
| Brand | OWC |
| Category | Computers |

## About

The OWC Mercury Helios 3S is a Thunderbolt 3 PCIe Expansion Solution designed for computer users.

This accessory is sought after by builders and professionals requiring additional expansion capabilities for their systems.

Its resale value is influenced by the unit's condition, whether it is complete, and its specific edition.

## FAQ

**What is the OWC Mercury Helios 3S?**

It is a Thunderbolt 3 PCIe Expansion Solution manufactured by OWC for computer systems.

**What factors affect its resale value?**

Resale value is determined by the item's condition, completeness, and edition.

**Who typically purchases this item?**

Builders and professionals who need extra expansion capabilities for their computers are interested in this product.

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Full price guide: https://junkpal.ai/products/owc-mercury-helios-3s-thunderbolt-3-pcie-expansion-solution-b083v3dkcn
How these values are computed: https://junkpal.ai/methodology
Cite as: "JunkPal price guide value as of 2026-07-21, based on real sold listings (junkpal.ai)"