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3801 LEGO Mindstorms Ultimate Accessory Set thumbnail image

3801 LEGO Mindstorms Ultimate Accessory Set
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3801 LEGO Mindstorms Ultimate Accessory Set
  • Ultimate Accessory Set thumbnail
  • Ultimate Accessory Set thumbnail
  • Ultimate Accessory Set thumbnail

Set Value (New/Sealed)

This chart represents the current new/sealed value of the set Ultimate Accessory Set since June 2016. Very high accuracy
LEGO 3801 Ultimate Accessory Set was a 45 piece Mindstorms set released in 2000. It consists of electric components like a Mindstorms RCX Remote Control, rotation and touch sensors, various Technic liftarms, connectors, and translucent bricks. The Constructopedia explains how to use the new building elements and provides building ideas.

Today's value for a new, sealed Ultimate Accessory Set is estimated around $70, with an average yearly gain of 3.4%, expected to level off to around 2.6% in the coming year. On secondary markets, the typical price range for the set MISB/NISB is between $53 and $85. Current used prices for Ultimate Accessory Set range from $49 to $73, depending on the set's condition, with an average price of $61 for those in good overall condition.
All regions

For Sale (New/Sealed)

 (US) BNIB $49.99
-29.0%
(JP) New condition.Box has been opened, all inner parts are sealed. $53.26
-24.4%
(AU) BrickLink store classic $58.52
-16.9%
(US) MindStorms Ultimate Accessory Set 3801 - New & Sealed - Rare Vintage Kit
BrickEconomy Choice
$69.99
-0.6%
(US) Amazon listing for Ultimate Accessory Set ~$73.94
+5.0%
(US) New in sealed box $75.00
+6.5%
(US) MindStorms ULTIMATE ACCESSORY SET Robotics Building Set 3801 NEW 2000 $79.99
+13.6%
(US) New Sealed Perfect $85.00
+20.7%
(AU) NISB, all seals intact. Boxes have some shelfware. $88.00
+25.0%
(DE) LEGO Mindstorms Set 3801 Ultimate Accessory Set Neu & Versiegelt $91.84
+30.4%

Sales Distribution (Last 90 Days)

This chart shows the distribution of sales for the last 3 months of new/sealed 3801 Ultimate Accessory Set.

Sets in Mindstorms / 1

9719 Robotics Invention System

Theme / Subtheme Mindstorms / 1
Year 1998
Pieces 733
Availability Retired
9719 LEGO Mindstorms Robotics Invention System
Retail $199.99
Value $229.43
Growth  +14.7%
Annual growth 1.1%

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%

3800 Ultimate Builders Set

Theme / Subtheme Mindstorms / 1
Year 2001
Pieces 321
Availability Retired
3800 LEGO Mindstorms Ultimate Builders Set
Retail $59.99
Value $698.63
Growth  +1064.6%
Annual growth 11.1%

9736 Exploration Mars

Theme / Subtheme Mindstorms / 1
Year 2000
Pieces 155
Availability Retired
9736 LEGO Mindstorms Exploration Mars
Retail $49.99
Value $72.18
Growth  +44.4%
Annual growth 5.2%

9732 Extreme Creatures

Theme / Subtheme Mindstorms / 1
Year 1998
Pieces 148
Availability Retired
9732 LEGO Mindstorms Extreme Creatures
Retail $49.99
Value $65.62
Growth  +31.3%
Annual growth 1.1%

9731 Vision Command

Theme / Subtheme Mindstorms / 1
Year 2000
Pieces 138
Availability Retired
9731 LEGO Mindstorms Vision Command
Retail $99.99
Value $125.02
Growth  +25.0%

9730 Robo Sports

Theme / Subtheme Mindstorms / 1
Year 1998
Pieces 91
Availability Retired
9730 LEGO Mindstorms Robo Sports
Retail $49.99
Value $61.63
Growth  +23.3%
Annual growth 1.5%

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%

9911 Touch Sensor and Leads

Theme / Subtheme Mindstorms / 1
Year 2004
Pieces 3
Availability Retired
9911 LEGO Mindstorms Touch Sensor and Leads
Retail $11.99
Value $20.38
Growth  +70.0%
Annual growth 3.0%

9713 Infrared Transmission Tower

Theme / Subtheme Mindstorms / 1
Year 1998
Pieces 2
Availability Retired
9713 LEGO Mindstorms Infrared Transmission Tower
Retail $24.99
Value $25.00
Growth  +0.0%

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%

3805 Robotics Invention System Upgrade Kit

Theme / Subtheme Mindstorms / 1
Year 2001
Pieces 1
Availability Retired
3805 LEGO Mindstorms Robotics Invention System Upgrade Kit
Retail $19.99
Value $78.61
Growth  +293.2%
Annual growth 6.1%

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 $119.11
Growth  +8.3%

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%

9889 Temperature Sensor

Theme / Subtheme Mindstorms / 1
Year 2004
Pieces 1
Availability Retired
9889 LEGO Mindstorms Temperature Sensor
Retail $24.99
Value $31.82
Growth  +27.3%
Annual growth 3.5%

My Collection

Ultimate Accessory Set Reviews

29 reviews
4.7
Collectors
Investors
Brickset
“If you like Mindstorms really much, pick this one up. It has a lot of accessories to make the robot of your dreams. There are also controls you can make your robot command to you. This set deserves a 5 out of 5 for a great add-on.”
Full review at brickset.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
Make your inventions more powerful! The Ultimate Accessory Set™ comes with all you need to make your robotic inventions more powerful, aware, and *capable. The set includes two sensors, a LEGO® Lamp, extra building elements, and a remote control. The Constructopedia explains how to use the new building elements and provides building ideas.
Description provided by LEGO©