LEGO Robo Technology Set with Serial Transmitter 9785-1
LEGO Robo Technology Set with Serial Transmitter (9785-1) is estimated at about $289 sealed as of Sep 2026 (retail $150).
- Set number
- 9785-1
- Theme
- Education
- Year
- 2002
- Pieces
- 219
- Minifigures
- 0
- RRP
- $150
- Market value
- $289 (Estimate, Sep 2026)
- Used value
- $96
- Released
- 2002
- Retirement
- Retired in 2007
Robo Technology Set with Serial Transmitter value by year
From $200 in 2016 to $289 (Estimate, Sep 2026): +44%. Its highest year was 2026, at $269.
| Year | Value | Change |
|---|---|---|
| Estimate, Sep 2026 | $289 | +9.7% |
| 2026 (so far) | $269 | +2.3% |
| 2025 | $263 | +4.0% |
| 2024 | $253 | +2.4% |
| 2023 | $247 | +1.4% |
| 2022 | $244 | +1.8% |
| 2021 | $239 | +3.8% |
| 2020 | $231 | +2.9% |
| 2019 | $224 | +5.9% |
| 2018 | $212 | +0.7% |
| 2017 | $210 | +5.0% |
| 2016 | $200 | — |
Median of each year's market prices, sealed, in US dollars.
Frequently asked questions
How much is LEGO Robo Technology Set with Serial Transmitter (9785-1) worth?
LEGO Robo Technology Set with Serial Transmitter is worth approximately $289 on the secondary market today, based on current listings and completed sales. BrickStats updates this value daily.
Is LEGO Robo Technology Set with Serial Transmitter retired?
Yes — Robo Technology Set with Serial Transmitter (9785-1) 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 Robo Technology Set with Serial Transmitter gone up in value?
Yes. Robo Technology Set with Serial Transmitter launched at $150 and now trades around $289, an increase of 92.4%. See the price history chart for how it got there.
What is the price per piece for Robo Technology Set with Serial Transmitter?
At its $150 retail price across 219 pieces, Robo Technology Set with Serial Transmitter works out to about $0.685 per piece. Collectors often use price per piece to judge whether a set is good value.
Is LEGO Robo Technology Set with Serial Transmitter a good investment?
Robo Technology Set with Serial Transmitter currently trades 92.4% above its $150 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 Robo Technology Set with Serial Transmitter so expensive?
Robo Technology Set with Serial Transmitter was released in 2002 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.