LEGO Rotation Sensor 9756-1
LEGO Rotation Sensor (9756-1) is estimated at about $17 sealed as of Sep 2026 (retail $15). Retired · 1 pieces · 1999 Mindstorms.
- Set number
- 9756-1
- Theme
- Mindstorms
- Subtheme
- 1.0
- Year
- 1999
- Pieces
- 1
- Minifigures
- 0
- RRP
- $15
- Market value
- $17 (Estimate, Sep 2026)
- Used value
- $5
- Retirement
- Retired
Rotation Sensor value by year
From $15 in 2006 to $17 (Estimate, Sep 2026): +8%. Its highest year was 2014, at $19.
| Year | Value | Change |
|---|---|---|
| Estimate, Sep 2026 | $17 | −1.1% |
| 2026 (so far) | $17 | −0.4% |
| 2025 | $17 | +2.1% |
| 2024 | $16 | +0.0% |
| 2023 | $16 | −0.3% |
| 2022 | $17 | +4.2% |
| 2021 | $16 | −0.5% |
| 2020 | $16 | +2.0% |
| 2019 | $16 | −1.0% |
| 2018 | $16 | +2.7% |
| 2017 | $15 | +12.1% |
| 2016 | $14 | −16.0% |
| 2015 | $16 | −13.2% |
| 2014 | $19 | +14.1% |
| 2013 | $16 | −2.4% |
| 2012 | $17 | −0.2% |
| 2011 | $17 | +28.6% |
| 2010 | $13 | −15.9% |
| 2009 | $16 | −0.9% |
| 2008 | $16 | +3.7% |
| 2007 | $15 | −1.3% |
| 2006 | $15 | — |
Median of each year's market prices, sealed, in US dollars.
Frequently asked questions
How much is LEGO Rotation Sensor (9756-1) worth?
LEGO Rotation Sensor is worth approximately $17 on the secondary market today, based on current listings and completed sales. BrickStats updates this value daily.
Is LEGO Rotation Sensor retired?
Yes — Rotation Sensor (9756-1) 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 Rotation Sensor gone up in value?
Yes. Rotation Sensor launched at $15 and now trades around $17, an increase of 11.1%. See the price history chart for how it got there.
What is the price per piece for Rotation Sensor?
At its $15 retail price across 1 pieces, Rotation Sensor works out to about $15.000 per piece. Collectors often use price per piece to judge whether a set is good value.
Is LEGO Rotation Sensor a good investment?
Rotation Sensor currently trades 11.1% 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 Rotation Sensor so expensive?
Rotation Sensor was released in 1999 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.