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<h1>Ultimate Builders Set</h1><div class='tags floatleft'><a href='/sets/3800-1/Ultimate-Builders-Set'>3800-1</a> <a href='/sets/theme-Mindstorms'>Mindstorms</a> <a class='subtheme' href='/sets/subtheme-1-5'>1.5</a> <a class='year' href='/sets/theme-Mindstorms/year-2001'>2001</a> </div><div class='floatright'>©2001 LEGO Group</div>

Ultimate Builders Set

3800-1 Mindstorms 1.5 2001
©2001 LEGO Group
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3800: Ultimate Builders Set

3800-1 Mindstorms 1.5 2001
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1 review
Pieces
321
RRP
$60.00
RRP (inflated)
$111
PPP
18.7c
Packaging
Box
Value new
~$233.96
Value used
~$45.62
Notes
Random set of the day on 20 Apr 2022
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455 own this set, 175 want it
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<h1>Ultimate Accessory Set</h1><div class='tags floatleft'><a href='/sets/3801-1/Ultimate-Accessory-Set'>3801-1</a> <a href='/sets/theme-Mindstorms'>Mindstorms</a> <a class='subtheme' href='/sets/subtheme-1-5'>1.5</a> <a class='year' href='/sets/theme-Mindstorms/year-2000'>2000</a> </div><div class='floatright'>©2000 LEGO Group</div>

Ultimate Accessory Set

3801-1 Mindstorms 1.5 2000
©2000 LEGO Group
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3801: Ultimate Accessory Set

3801-1 Mindstorms 1.5 2000
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1 review
Pieces
45
RRP
$50.00
RRP (inflated)
$95
PPP
111.1c
Packaging
Box
Instructions
Yes
Value new
~$49.99
Value used
~$42.87
Our community
750 own this set, 152 want it
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<h1>Robotics Invention System Upgrade Kit</h1><div class='tags floatleft'><a href='/sets/3803-1/Robotics-Invention-System-Upgrade-Kit'>3803-1</a> <a href='/sets/theme-Mindstorms'>Mindstorms</a> <a class='subtheme' href='/sets/subtheme-1-0'>1.0</a> <a class='year' href='/sets/theme-Mindstorms/year-1999'>1999</a> </div><div class='floatright'>©1999 LEGO Group</div>

Robotics Invention System Upgrade Kit

3803-1 Mindstorms 1.0 1999
©1999 LEGO Group
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3803: Robotics Invention System Upgrade Kit

3803-1 Mindstorms 1.0 1999
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Pieces
70
RRP
$25.00
RRP (inflated)
$49
PPP
35.7c
Packaging
Box
Value new
~$50.00
Notes
Upgrades version 1.0 to version 1.5. Contains V1.5 CD-Rom, User Guide, Constructopedia and Test Pad plus 65 extra LEGO elements.
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89 own this set, 113 want it
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<h1>Robotics Invention System V2.0</h1><div class='tags floatleft'><a href='/sets/3804-1/Robotics-Invention-System-V2-0'>3804-1</a> <a href='/sets/theme-Mindstorms'>Mindstorms</a> <a class='subtheme' href='/sets/subtheme-2-0'>2.0</a> <a class='year' href='/sets/theme-Mindstorms/year-2001'>2001</a> </div><div class='floatright'>©2001 LEGO Group</div>

Robotics Invention System V2.0

3804-1 Mindstorms 2.0 2001
©2001 LEGO Group
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3804: Robotics Invention System V2.0

3804-1 Mindstorms 2.0 2001
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✭✭✭✭✩ 4.2 26 ratings 6 reviews
Pieces
717
RRP
$200.00
RRP (inflated)
$324
PPP
27.9c
Instructions
Yes
Launch/exit
31 Dec 2004 - 31 Mar 2006 (1y 2m 28d)
Value new
~$213.94
Value used
~$141.46
Notes
Random set of the day on 24 Jun 2025
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1409 own this set, 165 want it
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<h1>Robotics Invention System Upgrade Kit</h1><div class='tags floatleft'><a href='/sets/3805-1/Robotics-Invention-System-Upgrade-Kit'>3805-1</a> <a href='/sets/theme-Mindstorms'>Mindstorms</a> <a class='subtheme' href='/sets/subtheme-1-5'>1.5</a> <a class='year' href='/sets/theme-Mindstorms/year-2001'>2001</a> </div><div class='floatright'>©2001 LEGO Group</div>

Robotics Invention System Upgrade Kit

3805-1 Mindstorms 1.5 2001
©2001 LEGO Group
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3805: Robotics Invention System Upgrade Kit

3805-1 Mindstorms 1.5 2001
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Pieces
1
RRP
$20.00
RRP (inflated)
$37
PPP
2000.0c
Packaging
Other
Notes
Upgrades version 1.5 to version 2.0. Contains V2.0 CD-Rom only.
Our community
119 own this set, 115 want it
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<h1>Mindstorms NXT</h1><div class='tags floatleft'><a href='/sets/8527-1/Mindstorms-NXT'>8527-1</a> <a href='/sets/theme-Mindstorms'>Mindstorms</a> <a class='subtheme' href='/sets/subtheme-NXT'>NXT</a> <a class='year' href='/sets/theme-Mindstorms/year-2006'>2006</a> </div><div class='floatright'>©2006 LEGO Group</div>

Mindstorms NXT

8527-1 Mindstorms NXT 2006
©2006 LEGO Group
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8527: Mindstorms NXT

8527-1 Mindstorms NXT 2006
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✭✭✭✭✩ 4.2 37 ratings 2 reviews
Pieces
577
RRP
$249.99 | More
RRP (inflated)
$405
PPP
43.3c
Instructions
Yes
Launch/exit
1 Sep 2006 - 31 Dec 2006 (3m 29d)
Value new
~$236.24
Value used
~$103.31
Our community
2417 own this set, 315 want it
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<h1>Mindstorms NXT 2.0</h1><div class='tags floatleft'><a href='/sets/8547-1/Mindstorms-NXT-2-0'>8547-1</a> <a href='/sets/theme-Mindstorms'>Mindstorms</a> <a class='subtheme' href='/sets/subtheme-NXT-2-0'>NXT 2.0</a> <a class='year' href='/sets/theme-Mindstorms/year-2009'>2009</a> </div><div class='floatright'>©2009 LEGO Group</div>

Mindstorms NXT 2.0

8547-1 Mindstorms NXT 2.0 2009
©2009 LEGO Group
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8547: Mindstorms NXT 2.0

8547-1 Mindstorms NXT 2.0 2009
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✭✭✭✭✭ 4.3 85 ratings 4 reviews
Pieces
619
RRP
$279.99 | More
RRP (inflated)
$398
PPP
45.2c
Packaging
Box
Instructions
Yes
Additional images
15
Designer
Jørn Thomsen
Launch/exit
1 Aug 2009 - 31 Dec 2012 (3y 5m)
Value new
~$463.44
Value used
~$255.51
Our community
3612 own this set, 729 want it
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<h1>RCX Programmable LEGO Brick</h1><div class='tags floatleft'><a href='/sets/9709-1/RCX-Programmable-LEGO-Brick'>9709-1</a> <a href='/sets/theme-Mindstorms'>Mindstorms</a> <a class='subtheme' href='/sets/subtheme-1-0'>1.0</a> <a class='year' href='/sets/theme-Mindstorms/year-1999'>1999</a> </div><div class='floatright'>©1999 LEGO Group</div>

RCX Programmable LEGO Brick

9709-1 Mindstorms 1.0 1999
©1999 LEGO Group
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9709: RCX Programmable LEGO Brick

9709-1 Mindstorms 1.0 1999
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1 review
Pieces
1
RRP
$110.00
RRP (inflated)
$216
PPP
11000.0c
Packaging
Box
Additional images
1
Value new
~$31.78
Value used
~$10.88
Our community
342 own this set, 140 want it
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<h1>Robotics Invention System</h1><div class='tags floatleft'><a href='/sets/9719-1/Robotics-Invention-System'>9719-1</a> <a href='/sets/theme-Mindstorms'>Mindstorms</a> <a class='subtheme' href='/sets/subtheme-1-0'>1.0</a> <a class='year' href='/sets/theme-Mindstorms/year-1998'>1998</a> </div><div class='floatright'>©1998 LEGO Group</div>

Robotics Invention System

9719-1 Mindstorms 1.0 1998
©1998 LEGO Group
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9719: Robotics Invention System

9719-1 Mindstorms 1.0 1998
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Pieces
733
RRP
$200.00
RRP (inflated)
$402
PPP
27.3c
Packaging
Box
Instructions
Yes
Value new
~$200.00
Value used
~$80.00
Notes
Random set of the day on 01 Mar 2023
Version 1.0.
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1243 own this set, 139 want it
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<h1>Robo Sports</h1><div class='tags floatleft'><a href='/sets/9730-1/Robo-Sports'>9730-1</a> <a href='/sets/theme-Mindstorms'>Mindstorms</a> <a class='subtheme' href='/sets/subtheme-1-0'>1.0</a> <a class='year' href='/sets/theme-Mindstorms/year-1998'>1998</a> </div><div class='floatright'>©1998 LEGO Group</div>

Robo Sports

9730-1 Mindstorms 1.0 1998
©1998 LEGO Group
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9730: Robo Sports

9730-1 Mindstorms 1.0 1998
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Pieces
91
RRP
$50.00
RRP (inflated)
$101
PPP
54.9c
Packaging
Box
Instructions
Yes
Value new
~$60.00
Value used
~$40.71
Notes
Random set of the day on 10 Aug 2020
Add-on set for Mindstorms.
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456 own this set, 131 want it
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<h1>Vision Command</h1><div class='tags floatleft'><a href='/sets/9731-1/Vision-Command'>9731-1</a> <a href='/sets/theme-Mindstorms'>Mindstorms</a> <a class='subtheme' href='/sets/subtheme-1-5'>1.5</a> <a class='year' href='/sets/theme-Mindstorms/year-2000'>2000</a> </div><div class='floatright'>©2000 LEGO Group</div>

Vision Command

9731-1 Mindstorms 1.5 2000
©2000 LEGO Group
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9731: Vision Command

9731-1 Mindstorms 1.5 2000
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1 review
Pieces
138
RRP
$100.00
RRP (inflated)
$190
PPP
72.5c
Packaging
Box
Instructions
Yes
Value new
~$19.83
Value used
~$50.76
Notes
Set includes digital colour camera.
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839 own this set, 138 want it
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<h1>Extreme Creatures</h1><div class='tags floatleft'><a href='/sets/9732-1/Extreme-Creatures'>9732-1</a> <a href='/sets/theme-Mindstorms'>Mindstorms</a> <a class='subtheme' href='/sets/subtheme-1-0'>1.0</a> <a class='year' href='/sets/theme-Mindstorms/year-1998'>1998</a> </div><div class='floatright'>©1998 LEGO Group</div>

Extreme Creatures

9732-1 Mindstorms 1.0 1998
©1998 LEGO Group
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9732: Extreme Creatures

9732-1 Mindstorms 1.0 1998
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Pieces
148
RRP
$50.00
RRP (inflated)
$101
PPP
33.8c
Packaging
Box
Instructions
Yes
Value new
~$59.50
Value used
~$40.96
Notes
Add-on set for Mindstorms.
Our community
469 own this set, 142 want it
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<h1>Robotics Discovery Set</h1><div class='tags floatleft'><a href='/sets/9735-1/Robotics-Discovery-Set'>9735-1</a> <a href='/sets/theme-Mindstorms'>Mindstorms</a> <a class='subtheme' href='/sets/subtheme-1-0'>1.0</a> <a class='year' href='/sets/theme-Mindstorms/year-1999'>1999</a> </div><div class='floatright'>©1999 LEGO Group</div>

Robotics Discovery Set

9735-1 Mindstorms 1.0 1999
©1999 LEGO Group
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9735: Robotics Discovery Set

9735-1 Mindstorms 1.0 1999
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1 review
Pieces
390
RRP
$150.00
RRP (inflated)
$294
PPP
38.5c
Instructions
Yes
Value new
~$230.34
Value used
~$80.00
Notes
Random set of the day on 27 Mar 2021
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437 own this set, 161 want it
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<h1>Exploration Mars</h1><div class='tags floatleft'><a href='/sets/9736-1/Exploration-Mars'>9736-1</a> <a href='/sets/theme-Mindstorms'>Mindstorms</a> <a class='subtheme' href='/sets/subtheme-1-5'>1.5</a> <a class='year' href='/sets/theme-Mindstorms/year-2000'>2000</a> </div><div class='floatright'>©2000 LEGO Group</div>

Exploration Mars

9736-1 Mindstorms 1.5 2000
©2000 LEGO Group
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9736: Exploration Mars

9736-1 Mindstorms 1.5 2000
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1 review
Pieces
155
RRP
$50.00
RRP (inflated)
$95
PPP
32.3c
Packaging
Box
Instructions
Yes
Value new
~$40.53
Value used
~$51.75
Notes
Random set of the day on 05 Jun 2020
Add-on set for Mindstorms.
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737 own this set, 142 want it
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<h1>Robotics Invention System 1.5</h1><div class='tags floatleft'><a href='/sets/9747-1/Robotics-Invention-System-1-5'>9747-1</a> <a href='/sets/theme-Mindstorms'>Mindstorms</a> <a class='subtheme' href='/sets/subtheme-1-5'>1.5</a> <a class='year' href='/sets/theme-Mindstorms/year-1999'>1999</a> </div><div class='floatright'>©1999 LEGO Group</div>

Robotics Invention System 1.5

9747-1 Mindstorms 1.5 1999
©1999 LEGO Group
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9747: Robotics Invention System 1.5

9747-1 Mindstorms 1.5 1999
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Pieces
717
RRP
$200.00
RRP (inflated)
$392
PPP
27.9c
Instructions
Yes
Value new
~$199.90
Value used
~$71.24
Notes
Random set of the day on 20 Dec 2018
Version 1.5.
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1311 own this set, 130 want it
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<h1>Droid Developer Kit</h1><div class='tags floatleft'><a href='/sets/9748-1/Droid-Developer-Kit'>9748-1</a> <a href='/sets/theme-Mindstorms'>Mindstorms</a> <a class='subtheme' href='/sets/subtheme-Star-Wars'>Star Wars</a> <a class='year' href='/sets/theme-Mindstorms/year-1999'>1999</a> </div><div class='floatright'>©1999 LEGO Group</div>

Droid Developer Kit

9748-1 Mindstorms Star Wars 1999
©1999 LEGO Group
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9748: Droid Developer Kit

9748-1 Mindstorms Star Wars 1999
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✭✭✭✭✩ 3.8 61 ratings 3 reviews
Pieces
657
RRP
$100.00
RRP (inflated)
$196
PPP
15.2c
Instructions
Yes
Value new
~$267.01
Value used
~$63.97
Our community
3037 own this set, 519 want it
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<h1>Dark Side Developer Kit</h1><div class='tags floatleft'><a href='/sets/9754-1/Dark-Side-Developer-Kit'>9754-1</a> <a href='/sets/theme-Mindstorms'>Mindstorms</a> <a class='subtheme' href='/sets/subtheme-Star-Wars'>Star Wars</a> <a class='year' href='/sets/theme-Mindstorms/year-2000'>2000</a> </div><div class='floatright'>©2000 LEGO Group</div>

Dark Side Developer Kit

9754-1 Mindstorms Star Wars 2000
©2000 LEGO Group
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9754: Dark Side Developer Kit

9754-1 Mindstorms Star Wars 2000
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✭✭✭✭✩ 4.0 28 ratings 4 reviews
Pieces
578
RRP
$100.00
RRP (inflated)
$190
PPP
17.3c
Packaging
Box
Instructions
Yes
Value new
~$297.99
Value used
~$74.25
Notes
Random set of the day on 21 Jul 2021
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1511 own this set, 520 want it
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