Monorail Transport Base #6991 — LEGO Space Set Value
LEGO SpaceWhat the Monorail Transport Base #6991 LEGO set is worth — loose, complete, and sealed.
Monorail Transport Base #6991 value — Loose $155 · Complete (CIB) $593 · Sealed (new) $2,905. Prices updated August 2026.
Monthly CIB value, based on sold comps.
See the actual sold listings on eBay ↗Live on eBay right now
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Price data verified against · 1
Item details
- UPC / EAN
- 042884069919
- Brand
- LEGO
- Theme
- LEGO Space
- Set number
- #6991
- Release date
- January 1, 1994
Monorail Transport Base #6991 (LEGO Space) resale value
A loose Monorail Transport Base #6991 set runs around $155, a complete copy (all pieces + box + instructions) about $593, and a factory-sealed box commands $2905.
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 | $155 | eBay sold comps |
| Complete (CIB) | $593 | eBay sold comps |
| Sealed (new) | $2,905 | eBay sold comps |
| Live asking — low / typical / high | $2.99 / $823 / $3,566 | 20 live eBay listings ↗ |
Market check: As of July 18, 2026, 20 live eBay listings ask $2.99–$3,565.83 (median $823.00).
Frequently asked questions
- What is the best value condition for Monorail Transport Base #6991?
- For the best immediate value, the loose version is available for $153.
- How much is a brand new, sealed copy of this set?
- A sealed, new copy of the Monorail Transport Base #6991 is priced at $2689.
- What is the price point for a complete, used set?
- A complete, in-box (CIB) version of the set is currently valued at $666.