Robotics Invention System [Version 2.0] #3804 — LEGO Mindstorms Set Value
LEGO MindstormsWhat the Robotics Invention System [Version 2.0] #3804 LEGO set is worth — loose, complete, and sealed.
Robotics Invention System [Version 2.0] #3804 value — Loose $9 · Complete (CIB) $60 · Sealed (new) $114. Prices updated August 2026.
Monthly CIB value, based on sold comps.
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Price data verified against · 1
Item details
- UPC / EAN
- 5702012010842
- Brand
- LEGO
- Theme
- LEGO Mindstorms
Robotics Invention System [Version 2.0] #3804 (LEGO Mindstorms) resale value
A loose Robotics Invention System [Version 2.0] #3804 set runs around $9, a complete copy (all pieces + box + instructions) about $60, and a factory-sealed box commands $114.
What drives the price
Retired sets, completeness (every piece + minifigs + instructions + box), and sealed condition drive LEGO value. Exclusive sets and discontinued themes appreciate the most; minifigs alone can carry significant value.
Price guide
What this actually trades for — sold values by condition vs. what sellers are asking today
| Condition | Value | Based on |
|---|---|---|
| Loose | $9 | eBay sold comps |
| Complete (CIB) | $60 | eBay sold comps |
| Sealed (new) | $114 | eBay sold comps |
Frequently asked questions
- What is the best deal for this LEGO Mindstorms set?
- The best value depends on your needs; loose pieces are available for only $8, or you can get the complete set for $60.
- Is the sealed version worth the extra cost?
- The sealed, new version is priced at $109, offering the full, untouched experience.
- Where can I find the complete version of this set?
- The complete (CIB) Robotics Invention System 2.0 is available for $60.
