Robotics Discovery Set #9735 — LEGO Mindstorms Set Value
LEGO MindstormsWhat the Robotics Discovery Set #9735 LEGO set is worth — loose, complete, and sealed.
Robotics Discovery Set #9735 value — Loose $31 · Complete (CIB) $64 · Sealed (new) $250. 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
- 0042884097356
- Brand
- LEGO
- Theme
- LEGO Mindstorms
- Set number
- #9735
- Release date
- January 1, 1999
Robotics Discovery Set #9735 (LEGO Mindstorms) resale value
A loose Robotics Discovery Set #9735 set runs around $31, a complete copy (all pieces + box + instructions) about $64, and a factory-sealed box commands $250.
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 | $31 | eBay sold comps |
| Complete (CIB) | $64 | eBay sold comps |
| Sealed (new) | $250 | eBay sold comps |
Frequently asked questions
- What is the going rate for a used, complete set?
- A complete, used set of the LEGO Mindstorms Discovery Set #9735 is valued at $74.
- Can I get this set brand new?
- Yes, the sealed, new version of the LEGO Mindstorms Discovery Set #9735 is listed for $95.
- What is the lowest price I can expect to pay for this set?
- The lowest listed price for the LEGO Mindstorms Discovery Set #9735 is $31 for a loose item.
