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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>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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