# Knights Challenge #1584 — resale value

Source: JunkPal price guide — https://junkpal.ai/products/knights-challenge-1584-lego-castle-lego

**Knights Challenge #1584** is worth about **$140** loose, based on real closed eBay sales. Sealed or new examples sell for around **$1,709.55**.

Live listings and the full sold-price history are on the page: https://junkpal.ai/products/knights-challenge-1584-lego-castle-lego

## Value by tier

| Condition | Value (USD) |
| --- | --- |
| Loose | $140 |
| Complete (CIB) | $162 |
| Sealed (new) | $1710 |

Values are medians of real closed eBay sales, updated 2026-08-07. 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.

Recent movement: Steady.

## Check the market

- [Sold listings on eBay](https://junkpal.ai/api/go?to=https%3A%2F%2Fwww.ebay.com%2Fsch%2Fi.html%3F_nkw%3DLEGO%2520Knights%2520Challenge%25201584%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%3DLEGO%2520Knights%2520Challenge%25201584%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 |
| --- | --- |
| UPC / EAN | 5702010915842 |
| Brand | LEGO |
| Theme | LEGO Castle |
| Set number | #1584 |
| Release date | January 1, 1988 |

## Knights Challenge #1584 (LEGO Castle) resale value

A loose Knights Challenge #1584 set runs around $140, a complete copy (all pieces + box + instructions) about $162, and a factory-sealed box commands $1710.

### What drives the price

Retired sets, completeness (every piece + minifigs + instructions + box), and sealed condition drive LEGO value. Exclusive sets and discontinued themes appreciate the most; minifigs alone can carry significant value.

## FAQ

**What is the best value condition for Knights Challenge #1584?**

For the best balance of value and playability, the Loose condition at $162 offers a great entry point.

**How much is a sealed copy of this LEGO set worth?**

A brand new, sealed copy of Knights Challenge #1584 is currently valued at $1710.

**Can I get this set for less than $332?**

Yes, the set is available loose for $162, which is significantly less than the Complete in Box price.

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Full price guide: https://junkpal.ai/products/knights-challenge-1584-lego-castle-lego
How these values are computed: https://junkpal.ai/methodology
Cite as: "JunkPal price guide value as of 2026-08-07, based on real sold listings (junkpal.ai)"