LEGO Transformer and Speed Regulator 4548-1
LEGO Transformer and Speed Regulator (4548-1) is worth about $275 sealed (retail $42). Retired · 3 pieces · 1991 Trains. Track its value and price history.
- Set number
- 4548-1
- Theme
- Trains
- Subtheme
- 9V
- Year
- 1991
- Pieces
- 3
- Minifigures
- 0
- RRP
- $42
- Market value
- $275
- Used value
- $50
- Released
- 1991
- Retirement
- Retired
Transformer and Speed Regulator value by year
From $47 in 2016 to $275 today: +486%. Its highest year was 2023, at $123.
| Year | Value | Change |
|---|---|---|
| Today | $275 | +150.5% |
| 2026 (so far) | $105 | −4.1% |
| 2025 | $110 | −9.1% |
| 2024 | $121 | −1.6% |
| 2023 | $123 | +34.5% |
| 2022 | $91 | +4.6% |
| 2021 | $87 | +18.2% |
| 2020 | $74 | +5.8% |
| 2019 | $70 | +6.8% |
| 2018 | $65 | +27.4% |
| 2017 | $51 | +9.3% |
| 2016 | $47 | — |
Median of each year's market prices, sealed, in US dollars.
Frequently asked questions
How much is LEGO Transformer and Speed Regulator (4548-1) worth?
LEGO Transformer and Speed Regulator is worth approximately $275 on the secondary market today, based on current listings and completed sales. BrickStats updates this value daily.
Is LEGO Transformer and Speed Regulator retired?
Yes — Transformer and Speed Regulator (4548-1) 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.
Has LEGO Transformer and Speed Regulator gone up in value?
Yes. Transformer and Speed Regulator launched at $42 and now trades around $275, an increase of 554.9%. See the price history chart for how it got there.
What is the price per piece for Transformer and Speed Regulator?
At its $42 retail price across 3 pieces, Transformer and Speed Regulator works out to about $13.997 per piece. Collectors often use price per piece to judge whether a set is good value.
Is LEGO Transformer and Speed Regulator a good investment?
Transformer and Speed Regulator currently trades 554.9% above its $42 retail price, and it is retired, so no new supply is entering the market. Past performance is not a prediction — condition, packaging and how long you hold all affect what a set actually sells for. BrickStats reports the numbers rather than giving investment advice.
Why is LEGO Transformer and Speed Regulator so expensive?
Transformer and Speed Regulator was released in 1991 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.