LEGO Temperature Sensor 9755-1
LEGO Temperature Sensor (9755-1) is estimated at about $25 sealed as of Sep 2026 (retail $24). Retired · 1 pieces · 1999 Mindstorms.
- Set number
- 9755-1
- Theme
- Mindstorms
- Subtheme
- 1.0
- Year
- 1999
- Pieces
- 1
- Minifigures
- 0
- RRP
- $24
- Market value
- $25 (Estimate, Sep 2026)
- Used value
- $9
- Retirement
- Retired
Frequently asked questions
How much is LEGO Temperature Sensor (9755-1) worth?
LEGO Temperature Sensor is worth approximately $25 on the secondary market today, based on current listings and completed sales. BrickStats updates this value daily.
Is LEGO Temperature Sensor retired?
Yes — Temperature Sensor (9755-1) 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 Temperature Sensor gone up in value?
Yes. Temperature Sensor launched at $24 and now trades around $25, an increase of 3.1%. See the price history chart for how it got there.
What is the price per piece for Temperature Sensor?
At its $24 retail price across 1 pieces, Temperature Sensor works out to about $24.000 per piece. Collectors often use price per piece to judge whether a set is good value.
Is LEGO Temperature Sensor a good investment?
Temperature Sensor currently trades 3.1% above its $24 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 Temperature Sensor so expensive?
Temperature 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.