LEGO Magma Monster 3847-1
LEGO Magma Monster (3847-1) is estimated at about $23 sealed as of Oct 2026 (retail $15). Retired 2012 · 95 pieces · 2010 Games.
- Set number
- 3847-1
- Theme
- Games
- Year
- 2010
- Pieces
- 95
- Minifigures
- 4
- RRP
- $15
- Market value
- $23 (Estimate, Oct 2026)
- Used value
- $7
- Released
- 2010
- Retirement
- Retired in 2012
Minifigures in LEGO Magma Monster
Magma Monster value by year
From $13 in 2012 to $23 (Estimate, Oct 2026): +78%. Its highest year was 2022, at $20.
| Year | Value | Change |
|---|---|---|
| Estimate, Oct 2026 | $23 | +18.8% |
| 2026 (so far) | $16 | −14.1% |
| 2025 | $19 | −0.7% |
| 2024 | $19 | +1.7% |
| 2023 | $19 | −6.9% |
| 2022 | $20 | +21.8% |
| 2021 | $17 | −6.5% |
| 2020 | $18 | −3.1% |
| 2019 | $18 | +10.0% |
| 2018 | $17 | +14.0% |
| 2017 | $15 | +8.3% |
| 2016 | $13 | +2.2% |
| 2015 | $13 | +1.4% |
| 2014 | $13 | +1.5% |
| 2013 | $13 | +1.3% |
| 2012 | $13 | — |
Median of each year's market prices, sealed, in US dollars.
What you are paying for
Its 4 priced minifigures are worth about $6 together, roughly 27% of the set's value — about typical for sets with minifigures (typically 24%).
Frequently asked questions
How much is LEGO Magma Monster (3847-1) worth?
LEGO Magma Monster is worth approximately $22 on the secondary market today, based on current listings and completed sales. BrickStats updates this value daily.
Is LEGO Magma Monster retired?
Yes — Magma Monster (3847-1) 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 Magma Monster gone up in value?
Yes. Magma Monster launched at $15 and now trades around $22, an increase of 50.1%. See the price history chart for how it got there.
What is the price per piece for Magma Monster?
At its $15 retail price across 95 pieces, Magma Monster works out to about $0.158 per piece. Collectors often use price per piece to judge whether a set is good value.
Is LEGO Magma Monster a good investment?
Magma Monster currently trades 50.1% above its $15 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 Magma Monster so expensive?
Magma Monster was released in 2010 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.