Message Decoder #6831 — LEGO Space Set Value
LEGO SpaceWhat the Message Decoder #6831 LEGO set is worth — loose, complete, and sealed.
Message Decoder #6831 value — Loose $9 · Complete (CIB) $23 · Sealed (new) $45. Prices updated July 2026.
Theme · LEGO Space
Live on eBay now
Live on eBay right now
JunkPal AI· resale insightanalyzing sold comps…
▍
Price data verified against · 1
Item details
- Brand
- LEGO
- Theme
- LEGO Space
Message Decoder #6831 (LEGO Space) resale value
A loose Message Decoder #6831 set runs around $9, a complete copy (all pieces + box + instructions) about $23, and a factory-sealed box commands $45.
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.
Price guide
What this actually trades for — sold values by condition vs. what sellers are asking today
| Condition | Value | Based on |
|---|---|---|
| Loose | $9 | eBay sold comps |
| Complete (CIB) | $23 | eBay sold comps |
| Sealed (new) | $45 | eBay sold comps |
Frequently asked questions
- What is the best deal for this LEGO Space set?
- The best value depends on your needs; loose is the cheapest at $10, while sealed is available for $150.
- How much is the complete version of Message Decoder #6831?
- The complete in box (CIB) version of Message Decoder #6831 is listed for $20.
- Is the sealed version significantly more expensive?
- Yes, the sealed (new) version of Message Decoder #6831 is priced at $150.