Diesel Freight Train Set #7720 — LEGO Train Set Value
LEGO TrainWhat the Diesel Freight Train Set #7720 LEGO set is worth — loose, complete, and sealed.
Diesel Freight Train Set #7720 value — Loose $17 · Complete (CIB) $136 · Sealed (new) $540. 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
- Brand
- LEGO
- Theme
- LEGO Train
- Set number
- #7720
- Release date
- January 1, 1980
Diesel Freight Train Set #7720 (LEGO Train) resale value
A loose Diesel Freight Train Set #7720 set runs around $17, a complete copy (all pieces + box + instructions) about $136, and a factory-sealed box commands $540.
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 | $17 | eBay sold comps |
| Complete (CIB) | $136 | eBay sold comps |
| Sealed (new) | $540 | eBay sold comps |
| Live asking — low / typical / high | $59.71 / $250 / $3,765 | 16 live eBay listings ↗ |
Market check: As of July 19, 2026, 16 live eBay listings ask $59.71–$3,764.77 (median $250.00).
Frequently asked questions
- What is the best deal for this LEGO Train set?
- The best value depends on your needs; the loose set is the most affordable at $20.
- How much is a brand new, sealed version worth?
- A sealed, new copy of the Diesel Freight Train Set #7720 is valued at $540.
- If I buy it complete but used, what should I expect to pay?
- A complete (CIB) set currently sells for $136 on the marketplace.