LEGO The Mushroom Island 21129-1
LEGO The Mushroom Island (21129-1) is worth about $43 sealed (retail $20). Retired 2018 · 247 pieces · 2017 Minecraft. Track its value and price history.
Discover The Mushroom Island!
- Set number
- 21129-1
- Theme
- Minecraft
- Subtheme
- Minifig-scale
- Year
- 2017
- Pieces
- 247
- Minifigures
- 2
- RRP
- $20
- Market value
- $43
- Used value
- $12
- Released
- 2017
- Retirement
- Retired in 2018
Minifigures in LEGO The Mushroom Island
The Mushroom Island value by year
From $23 in 2017 to $43 today: +86%. Its highest year was 2024, at $41.
| Year | Value | Change |
|---|---|---|
| Today | $43 | +9.1% |
| 2026 (so far) | $32 | −16.6% |
| 2025 | $39 | −4.9% |
| 2024 | $41 | +1.3% |
| 2023 | $40 | +3.8% |
| 2022 | $39 | +17.2% |
| 2021 | $33 | +18.3% |
| 2020 | $28 | +23.4% |
| 2019 | $23 | +0.0% |
| 2018 | $23 | +0.0% |
| 2017 | $23 | — |
Median of each year's market prices, sealed, in US dollars.
What you are paying for
Its 2 priced minifigures are worth about $4 together, roughly 9% 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 The Mushroom Island (21129-1) worth?
LEGO The Mushroom Island is worth approximately $42 on the secondary market today, based on current listings and completed sales. BrickStats updates this value daily.
Is LEGO The Mushroom Island retired?
Yes — The Mushroom Island (21129-1) 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 The Mushroom Island gone up in value?
Yes. The Mushroom Island launched at $20 and now trades around $42, an increase of 112.6%. See the price history chart for how it got there.
What is the price per piece for The Mushroom Island?
At its $20 retail price across 247 pieces, The Mushroom Island works out to about $0.081 per piece. Collectors often use price per piece to judge whether a set is good value.
Is LEGO The Mushroom Island a good investment?
The Mushroom Island currently trades 112.6% above its $20 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 The Mushroom Island so expensive?
The Mushroom Island was released in 2017 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.