Monorail Accessory Track #6921 — LEGO Space Set Value
LEGO SpaceWhat the Monorail Accessory Track #6921 LEGO set is worth — loose, complete, and sealed.
Monorail Accessory Track #6921 value — Loose $114 · Complete (CIB) $224 · Sealed (new) $352. 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
- 0042884069216
- Brand
- LEGO
- Theme
- LEGO Space
- Set number
- #6921
- Release date
- January 1, 1988
Monorail Accessory Track #6921 (LEGO Space) resale value
A loose Monorail Accessory Track #6921 set runs around $114, a complete copy (all pieces + box + instructions) about $224, and a factory-sealed box commands $352.
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 | $114 | eBay sold comps |
| Complete (CIB) | $224 | eBay sold comps |
| Sealed (new) | $352 | eBay sold comps |
| Live asking — low / typical / high | $70 / $275 / $999 | 15 live eBay listings ↗ |
Market check: As of July 19, 2026, 15 live eBay listings ask $70.00–$999.00 (median $275.00).
Frequently asked questions
- What is the price difference between loose and sealed?
- Loose pieces are available for $124, compared to $378 for the complete, sealed version.
- Is this item rare in the LEGO Space theme?
- The listing provides pricing based on condition: Loose at $124, Complete (CIB) at $224, and Sealed at $378.
- Which condition offers the best immediate value?
- The loose condition offers the lowest entry point at $124, while the sealed option is available for $378.