LEGO Sea Machines 4505-1
LEGO Sea Machines (4505-1) is estimated at about $16 sealed as of Sep 2026 (retail $7). Retired 2005 · 168 pieces · 2004 Creator.
- Set number
- 4505-1
- Theme
- Creator
- Subtheme
- Designer Set
- Year
- 2004
- Pieces
- 168
- Minifigures
- 0
- RRP
- $7
- Market value
- $16 (Estimate, Sep 2026)
- Used value
- $9
- Released
- 2004
- Retirement
- Retired in 2005
Sea Machines value by year
From $22 in 2016 to $16 (Estimate, Sep 2026): −27%. Its highest year was 2019, at $22.
| Year | Value | Change |
|---|---|---|
| Estimate, Sep 2026 | $16 | +1.6% |
| 2026 (so far) | $16 | −0.1% |
| 2025 | $16 | −6.9% |
| 2024 | $17 | −2.0% |
| 2023 | $17 | −9.0% |
| 2022 | $19 | +13.5% |
| 2021 | $17 | −5.9% |
| 2020 | $18 | −20.9% |
| 2019 | $22 | +11.1% |
| 2018 | $20 | +9.1% |
| 2017 | $18 | −15.3% |
| 2016 | $22 | — |
Median of each year's market prices, sealed, in US dollars.
Frequently asked questions
How much is LEGO Sea Machines (4505-1) worth?
LEGO Sea Machines is worth approximately $16 on the secondary market today, based on current listings and completed sales. BrickStats updates this value daily.
Is LEGO Sea Machines retired?
Yes — Sea Machines (4505-1) 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 Sea Machines gone up in value?
Yes. Sea Machines launched at $7 and now trades around $16, an increase of 126.7%. See the price history chart for how it got there.
What is the price per piece for Sea Machines?
At its $7 retail price across 168 pieces, Sea Machines works out to about $0.042 per piece. Collectors often use price per piece to judge whether a set is good value.
Is LEGO Sea Machines a good investment?
Sea Machines currently trades 126.7% above its $7 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 Sea Machines so expensive?
Sea Machines was released in 2004 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.