LEGO Touch Sensor 9843-1
LEGO Touch Sensor (9843-1) is estimated at about $31 sealed as of Sep 2026 (retail $25). Retired 2016 · 1 pieces · 2007 Mindstorms.
- Set number
- 9843-1
- Theme
- Mindstorms
- Subtheme
- NXT
- Year
- 2007
- Pieces
- 1
- Minifigures
- 0
- RRP
- $25
- Market value
- $31 (Estimate, Sep 2026)
- Used value
- $2
- Released
- 2007
- Retirement
- Retired in 2016
Touch Sensor value by year
From $21 in 2016 to $31 (Estimate, Sep 2026): +49%. Its highest year was 2026, at $26.
| Year | Value | Change |
|---|---|---|
| Estimate, Sep 2026 | $31 | +23.3% |
| 2026 (so far) | $26 | +1.1% |
| 2025 | $25 | +2.4% |
| 2024 | $25 | +1.4% |
| 2023 | $24 | +2.0% |
| 2022 | $24 | −4.5% |
| 2021 | $25 | +6.5% |
| 2020 | $23 | +4.4% |
| 2019 | $22 | +0.0% |
| 2018 | $22 | +2.0% |
| 2017 | $22 | +5.3% |
| 2016 | $21 | — |
Median of each year's market prices, sealed, in US dollars.
Frequently asked questions
How much is LEGO Touch Sensor (9843-1) worth?
LEGO Touch Sensor is worth approximately $31 on the secondary market today, based on current listings and completed sales. BrickStats updates this value daily.
Is LEGO Touch Sensor retired?
Yes — Touch Sensor (9843-1) 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 Touch Sensor gone up in value?
Yes. Touch Sensor launched at $25 and now trades around $31, an increase of 24.8%. See the price history chart for how it got there.
What is the price per piece for Touch Sensor?
At its $25 retail price across 1 pieces, Touch Sensor works out to about $24.990 per piece. Collectors often use price per piece to judge whether a set is good value.
Is LEGO Touch Sensor a good investment?
Touch Sensor currently trades 24.8% above its $25 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 Touch Sensor so expensive?
Touch Sensor 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.