LEGO Thulox 8931-1
LEGO Thulox (8931-1) is estimated at about $34 sealed as of Sep 2026 (retail $5). Retired 2008 · 39 pieces · 2007 Bionicle. Track its value and price history.
- Set number
- 8931-1
- Theme
- Bionicle
- Subtheme
- Hydruka
- Year
- 2007
- Pieces
- 39
- Minifigures
- 0
- RRP
- $5
- Market value
- $34 (Estimate, Sep 2026)
- Used value
- $10
- Released
- 2007
- Retirement
- Retired in 2008
Thulox value by year
From $14 in 2016 to $34 (Estimate, Sep 2026): +136%. Its highest year was 2025, at $36.
| Year | Value | Change |
|---|---|---|
| Estimate, Sep 2026 | $34 | −4.6% |
| 2026 (so far) | $32 | −10.8% |
| 2025 | $36 | +8.7% |
| 2024 | $33 | −0.1% |
| 2023 | $33 | +25.2% |
| 2022 | $26 | +18.1% |
| 2021 | $22 | −11.0% |
| 2020 | $25 | +7.0% |
| 2019 | $23 | +36.1% |
| 2018 | $17 | +27.7% |
| 2017 | $13 | −6.8% |
| 2016 | $14 | — |
Median of each year's market prices, sealed, in US dollars.
Frequently asked questions
How much is LEGO Thulox (8931-1) worth?
LEGO Thulox is worth approximately $34 on the secondary market today, based on current listings and completed sales. BrickStats updates this value daily.
Is LEGO Thulox retired?
Yes — Thulox (8931-1) 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 Thulox gone up in value?
Yes. Thulox launched at $5 and now trades around $34, an increase of 577.8%. See the price history chart for how it got there.
What is the price per piece for Thulox?
At its $5 retail price across 39 pieces, Thulox works out to about $0.128 per piece. Collectors often use price per piece to judge whether a set is good value.
Is LEGO Thulox a good investment?
Thulox currently trades 577.8% above its $5 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 Thulox so expensive?
Thulox was released in 2007 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.