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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

9V Cd Rom Electric Electric Motor Pneumatic

Pieces: 321
RRP: $60.00
PPP: 18.7c
Packaging: Box

Value new: ~$233.96
Value used: ~$45.62
Notes: Random set of the day on 20 Apr 2022

Our community: 453 own this set, 171 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

9V Cd Rom Electric Electric Motor Multibuild Sensor

✭✭✭✭✩ 4.2 26 ratings 6 reviews

Pieces: 717
RRP: $200.00
PPP: 27.9c
Instructions: Yes

Launch/exit: 31 Dec 2004 - 31 Mar 2006 (1y 2m 28d)
Value new: ~$213.94
Value used: ~$86.38
Notes: Random set of the day on 24 Jun 2025

Our community: 1397 own this set, 163 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

Pieces: 1
RRP: $20.00
PPP: 2000.0c
Packaging: Other

Notes: Upgrades version 1.5 to version 2.0. Contains V2.0 CD-Rom only.

Our community: 118 own this set, 112 want it

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