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9709 Mindstorms RCX Programmable LEGO Brick thumbnail image

9709 Mindstorms RCX Programmable LEGO Brick
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9709 Mindstorms RCX Programmable LEGO Brick
  • RCX Programmable LEGO Brick thumbnail
  • RCX Programmable LEGO Brick thumbnail
  • RCX Programmable LEGO Brick thumbnail
  • RCX Programmable LEGO Brick thumbnail

Set Value (New/Sealed)

This represents the current new/sealed value of the set RCX Programmable LEGO Brick since January 1999. Medium accuracy
9709 RCX Programmable LEGO Brick was a Mindstorms set released in 1999.
RCX Programmable LEGO Brick (set 9709-1) is an extremely old and rare LEGO set. It has not been seen for sale online or in retail stores in good/new condition in over 2 years. Due to its rarity, the current estimated value of $119.11 may be much lower than its true value, assuming it can be found for sale. As this set was released in 1999, finding it sealed and in good condition is particularly challenging, likely driving its true value even higher.

For Sale (New/Sealed)

There are currently no new/sealed listings available for 9709 RCX Programmable LEGO Brick at this time.
All regions

For Sale (Used)

 (UK) Used - BrickLink store BRICK FOR MOC $10.53
(US) Used - eBay listings for 9709 RCX Programmable LEGO Brick ~$11.98
(NL) Used - no batteries (6x) or adapter. tested with batteries. buttons work, display wor... $14.00

Sets in Mindstorms / 1

9747 Robotics Invention System

Theme / Subtheme Mindstorms / 1
Year 1999
Pieces 726
Availability Retired
9747 LEGO Mindstorms Robotics Invention System
Retail $199.99
Value $231.40
Growth  +15.7%

9735 Robotics Discovery Set

Theme / Subtheme Mindstorms / 1
Year 1999
Pieces 390
Availability Retired
9735 LEGO Mindstorms Robotics Discovery Set
Retail $149.99
Value $220.48
Growth  +47.0%
Annual growth 2.9%

3803 Robotics Invention System Upgrade Kit

Theme / Subtheme Mindstorms / 1
Year 1999
Pieces 70
Availability Retired
3803 LEGO Mindstorms Robotics Invention System Upgrade Kit
Retail $24.99
Value $35.89
Growth  +43.6%
Annual growth 1.5%

9757 Touch Sensor

Theme / Subtheme Mindstorms / 1
Year 1999
Pieces 2
Availability Retired
9757 LEGO Mindstorms Touch Sensor
Retail $10.99
Value $15.13
Growth  +37.7%
Annual growth 1.3%

9738 RCX Remote Control Unit

Theme / Subtheme Mindstorms / 1
Year 1999
Pieces 1
Availability Retired
9738 LEGO Mindstorms RCX Remote Control Unit
Retail $19.75
Value $30.49
Growth  +54.4%
Annual growth 1.8%

9755 Temperature Sensor

Theme / Subtheme Mindstorms / 1
Year 1999
Pieces 1
Availability Retired
9755 LEGO Mindstorms Temperature Sensor
Retail $23.99
Value $26.52
Growth  +10.5%

9756 Rotation Sensor

Theme / Subtheme Mindstorms / 1
Year 1999
Pieces 1
Availability Retired
9756 LEGO Mindstorms Rotation Sensor
Retail $14.99
Value $15.92
Growth  +6.2%

9758 Light Sensor

Theme / Subtheme Mindstorms / 1
Year 1999
Pieces 1
Availability Retired
9758 LEGO Mindstorms Light Sensor
Retail $19.75
Value $19.99
Growth  +1.2%
Annual growth 2.1%

My Collection

RCX Programmable LEGO Brick Reviews

19 reviews
4.7
Collectors
Investors
Instructables
“The main problem with Mindstorms RCX is the lack of support from Lego for these old sets. According to what I have read and some experience, the sets only really work well under Windows 98. People found ways to make them work under heavily patched copies of Windows XP, but... More since Microsoft no longer supports XP and the patches from Lego aren't available anymore, I had to find an alternative to the Lego software.”
Full review at www.instructables.com

About Mindstorms 1

This was the first generation of the LEGO Mindstorms platform also known as the original Robotics Invention System.

1 consists of 20 sets that ran from 1998 to 2004. As of today, 3800 Ultimate Builders Set is the most valuable 1 set with an estimated new/factory sealed value of $699.
Read more