LEGO 3803 Robotics Invention System Upgrade Kit is a Mindstorms set from 1999 valued at $43 for new and sealed sets, up 73% from an original retail price of $24.99. Annual appreciation has averaged 2.04% since release. Used copies are valued between $29 and $40 depending on condition.
LEGO 3803 Robotics Invention System Upgrade Kit is a Mindstorms set in the Mindstorms 1 subtheme released in 1999, containing 70 pieces. It was designed to upgrade Robotics Invention System 1.0 to version 1.5 and includes a V1.5 CD-ROM, a user guide, a constructopedia, and a Test Pad. The set also provides 65 Technic elements, including black axles and liftarms, gray and blue connectors, blue and white rubber belts, a white gear, and a sticker sheet.
A new and sealed Robotics Invention System Upgrade Kit is currently valued at around $43, with annual growth of approximately 2%. The average used price is $36 for those in good overall condition. Based on current trends, this set could be valued near $44 within the next year.
Robotics Invention System Upgrade Kit is a relatively rare set. We have not seen set 3803-1 for sale in primary or secondary markets for over 6 months. Its market value is likely somewhat higher than our estimate.
The last brand new Robotics Invention System Upgrade Kit was sold on eBay.
There are currently no new/sealed listings available for Robotics Invention System Upgrade Kit at this time.
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