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9738 LEGO Mindstorms RCX Remote Control Unit thumbnail image

9738 LEGO Mindstorms RCX Remote Control Unit
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9738 LEGO Mindstorms RCX Remote Control Unit
  • RCX Remote Control Unit thumbnail
  • RCX Remote Control Unit thumbnail
  • RCX Remote Control Unit thumbnail

LEGO 9738 RCX Remote Control Unit is a Mindstorms set from 1999 valued at $21 for new and sealed sets, up 6% from an original retail price of $19.75. Annual appreciation has averaged 0.21% since release. On the used market, values range from $10 to $12 based on condition.

Set Value (New/Sealed)

This chart represents the current new/sealed value of the set RCX Remote Control Unit since November 2017. High accuracy
LEGO 9738 RCX Remote Control Unit is a Mindstorms accessory set released in 1999, containing 1 piece. It is an infrared remote that mirrors the buttons of the RCX Programmable LEGO Brick and can control the 9709 RCX unit wirelessly. The set includes an instruction guide and requires two AA batteries.

A new and sealed RCX Remote Control Unit is currently valued at around $21. The average used price is $10 for those in good overall condition. Based on current trends, this set could be valued near $21 within the next year.
It has been a few months since we last saw 9738 RCX Remote Control Unit available in either primary or secondary markets. Its true value may be slightly higher than our current estimate. The last brand new RCX Remote Control Unit was sold on eBay.

For Sale (New/Sealed)

There are currently no new/sealed listings available for 9738 RCX Remote Control Unit at this time.
All regions

For Sale (Used)

 (CA) Used - Good condition, not tested, not sure how. $9.00
(US) Used - eBay listing for 9738 RCX Remote Control Unit $9.89
(US) Used - - Looks new in original box with instructions. Untested. $9.99
(CA) Used - like new. $10.00
(US) Used - untested, great condition $10.62

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 $205.24
Growth  +2.6%

9735 Robotics Discovery Set

Theme / Subtheme Mindstorms / 1
Year 1999
Pieces 390
Availability Retired
9735 LEGO Mindstorms Robotics Discovery Set
Retail $149.99
Value $172.00
Growth  +14.7%
Annual growth 2.0%

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 $43.42
Growth  +73.7%
Annual growth 2.1%

9757 Touch Sensor

Theme / Subtheme Mindstorms / 1
Year 1999
Pieces 2
Availability Retired
9757 LEGO Mindstorms Touch Sensor
Retail $10.99
Value $15.31
Growth  +39.3%
Annual growth 1.2%

9709 RCX Programmable LEGO Brick

Theme / Subtheme Mindstorms / 1
Year 1999
Pieces 1
Availability Retired
9709 Mindstorms RCX Programmable LEGO Brick
Retail $109.99
Value $120.10
Growth  +9.2%

9755 Temperature Sensor

Theme / Subtheme Mindstorms / 1
Year 1999
Pieces 1
Availability Retired
9755 LEGO Mindstorms Temperature Sensor
Retail $23.99
Value $27.03
Growth  +12.7%

9756 Rotation Sensor

Theme / Subtheme Mindstorms / 1
Year 1999
Pieces 1
Availability Retired
9756 LEGO Mindstorms Rotation Sensor
Retail $14.99
Value $16.59
Growth  +10.7%

9758 Light Sensor

Theme / Subtheme Mindstorms / 1
Year 1999
Pieces 1
Availability Retired
9758 LEGO Mindstorms Light Sensor
Retail $19.75
Value $21.35
Growth  +8.1%
Annual growth 8.1%

My Collection

RCX Remote Control Unit Reviews

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About Mindstorms 1

This is the first generation of LEGO Mindstorms, built around 9719 Robotics Invention System from 1998. The name came from Mindstorms, a 1980 book by Seymour Papert of the MIT Media Lab, whose research on programmable bricks led to the RCX, the yellow brick at the centre of the kit. It holds a small computer with three motor outputs and three sensor inputs, and programs written on a PC went to it by infrared through a tower plugged into the computer.

1 consists of 20 sets that ran from 1998 to 2004. As of today, 9747 Robotics Invention System is the most valuable 1 set with an estimated new/factory sealed value of $205.
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