Robotics Invention System [1.0] #9719 — LEGO Mindstorms Set Value
LEGO MindstormsWhat the Robotics Invention System [1.0] #9719 LEGO set is worth — loose, complete, and sealed.
Robotics Invention System [1.0] #9719 value — Loose $20 · Complete (CIB) $82 · Sealed (new) $100. Prices updated August 2026.
Theme · LEGO Mindstorms
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Complete-in-box price history
Monthly CIB value, based on sold comps.
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Item details
- UPC / EAN
- 5702010997190
- Brand
- LEGO
- Theme
- LEGO Mindstorms
- Set number
- #9719
- Release date
- January 1, 1998
Robotics Invention System [1.0] #9719 (LEGO Mindstorms) resale value
A loose Robotics Invention System [1.0] #9719 set runs around $20, a complete copy (all pieces + box + instructions) about $82, and a factory-sealed box commands $100.
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 | $20 | eBay sold comps |
| Complete (CIB) | $82 | eBay sold comps |
| Sealed (new) | $100 | eBay sold comps |
Frequently asked questions
- What is the best deal for a beginner looking to start building?
- The loose version at $18 offers the most budget-friendly entry point into the LEGO Mindstorms system.
- How much more is the sealed version compared to the loose version?
- The sealed, new version is $82 more expensive than the loose version, priced at $100 versus $18.
- Is the CIB condition worth the extra cost over the loose parts?
- For collectors or those wanting all original packaging, the CIB version is available for $82, compared to $18 loose.
