Big Fair #10840 — LEGO Duplo Set Value
LEGO DuploWhat the Big Fair #10840 LEGO set is worth — loose, complete, and sealed.
Big Fair #10840 value — Loose $40 · Complete (CIB) $87 · Sealed (new) $148. Prices updated August 2026.
Theme · LEGO Duplo
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Complete-in-box price history
Monthly CIB value, based on sold comps.
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Item details
- UPC / EAN
- 673419283960
- Brand
- LEGO
- Theme
- LEGO Duplo
- Set number
- #10840
- Release date
- January 1, 2017
Big Fair #10840 (LEGO Duplo) resale value
A loose Big Fair #10840 set runs around $40, a complete copy (all pieces + box + instructions) about $87, and a factory-sealed box commands $148.
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 | $40 | eBay sold comps |
| Complete (CIB) | $87 | eBay sold comps |
| Sealed (new) | $148 | eBay sold comps |
Frequently asked questions
- What is the resale value for a loose Big Fair #10840?
- Loose pieces for this LEGO Duplo set are currently valued at $40.
- Is it worth paying the premium for a sealed version?
- Yes, a sealed, new copy of Big Fair #10840 is valued significantly higher at $166.
- How much is the complete, but not sealed, set worth?
- The complete in-box (CIB) version of this Duplo set is priced at $76.