LEGO Diesel Freight Train Set 7720-1
LEGO Diesel Freight Train Set (7720-1) is worth about $356 on the secondary market today. It has 425 pieces, belongs to the Trains theme and was released in 1980. This set has retired — LEGO no longer produces it, so supply is fixed and prices are set entirely by the resale market.
- Set number
- 7720-1
- Theme
- Trains
- Subtheme
- 4.5/12V
- Year
- 1980
- Pieces
- 425
- Minifigures
- 3
- Market value
- $356
- Used value
- $161
- Released
- 1980
- Retirement
- Retired
Minifigures in LEGO Diesel Freight Train Set
Diesel Freight Train Set value by year
From $244 in 2011 to $342 in 2026 so far: +40%. Its highest year was 2023, at $827.
| Year | Value | Change |
|---|---|---|
| 2026 (so far) | $342 | +6.8% |
| 2025 | $320 | −13.2% |
| 2024 | $369 | −55.4% |
| 2023 | $827 | +79.6% |
| 2022 | $461 | +27.1% |
| 2021 | $362 | +17.9% |
| 2020 | $307 | +3.6% |
| 2019 | $296 | +3.7% |
| 2018 | $286 | +2.1% |
| 2017 | $280 | +2.2% |
| 2016 | $274 | +2.2% |
| 2015 | $268 | +2.3% |
| 2014 | $262 | +2.3% |
| 2013 | $256 | +2.4% |
| 2012 | $250 | +2.5% |
| 2011 | $244 | — |
Median of each year's market prices, sealed, in US dollars.
What you are paying for
Its 3 priced minifigures are worth about $19 together, roughly 5% of the set's value — low for sets with minifigures, so the value is in the sealed set rather than the figures (typically 24%).
Frequently asked questions
How much is LEGO Diesel Freight Train Set (7720-1) worth?
LEGO Diesel Freight Train Set is worth approximately $356 on the secondary market today, based on current listings and completed sales. BrickStats updates this value daily.
Is LEGO Diesel Freight Train Set retired?
Yes — Diesel Freight Train Set (7720-1) has been retired by LEGO and is no longer in production. Retired sets have fixed supply, which is why their prices are driven purely by the resale market.
Why is LEGO Diesel Freight Train Set so expensive?
Diesel Freight Train Set was released in 1980 and has since retired. Once LEGO stops producing a set, the only supply is what is already in circulation, so sealed copies in good condition compete for a shrinking pool of stock. That scarcity, not the parts, is what moves the price.