LEGO RCX Programmable LEGO Brick 9709-1
LEGO RCX Programmable LEGO Brick (9709-1) is worth about $108 on the secondary market today, against a $216 retail price. It has 1 pieces, belongs to the Mindstorms theme and was released in 1999. This set has retired — LEGO no longer produces it, so supply is fixed and prices are set entirely by the resale market.
- Set number
- 9709-1
- Theme
- Mindstorms
- Subtheme
- 1.0
- Year
- 1999
- Pieces
- 1
- Minifigures
- 0
- RRP
- $216
- Market value
- $108
- Used value
- $9
- Retirement
- Retired
RCX Programmable LEGO Brick value by year
From $99 in 1999 to $104 in 2026 so far: +5%. Its highest year was 2014, at $127.
| Year | Value | Change |
|---|---|---|
| 2026 (so far) | $104 | +3.9% |
| 2024 | $100 | +5.0% |
| 2022 | $95 | −21.2% |
| 2020 | $121 | +26.8% |
| 2018 | $95 | −23.5% |
| 2016 | $124 | −2.2% |
| 2014 | $127 | +35.0% |
| 2012 | $94 | −13.2% |
| 2010 | $108 | −11.5% |
| 2008 | $123 | +30.2% |
| 2006 | $94 | +0.0% |
| 2004 | $94 | −15.7% |
| 2002 | $112 | −4.9% |
| 2000 | $117 | +18.4% |
| 1999 | $99 | — |
Median of each year's market prices, sealed, in US dollars.
Frequently asked questions
How much is LEGO RCX Programmable LEGO Brick (9709-1) worth?
LEGO RCX Programmable LEGO Brick is worth approximately $108 on the secondary market today, based on current listings and completed sales. BrickStats updates this value daily.
Is LEGO RCX Programmable LEGO Brick retired?
Yes — RCX Programmable LEGO Brick (9709-1) 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 RCX Programmable LEGO Brick gone up in value?
Not currently. RCX Programmable LEGO Brick launched at $216 and trades around $108 today, 49.9% below its retail price. The price history chart shows the full trend.
What is the price per piece for RCX Programmable LEGO Brick?
At its $216 retail price across 1 pieces, RCX Programmable LEGO Brick works out to about $216.000 per piece. Collectors often use price per piece to judge whether a set is good value.
Is LEGO RCX Programmable LEGO Brick a good investment?
RCX Programmable LEGO Brick currently trades 49.9% below its $216 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 RCX Programmable LEGO Brick so expensive?
RCX Programmable LEGO Brick 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.