Bikini Bottom Undersea Party #3818 — LEGO Spongebob Squarepants Set Value
LEGO Spongebob SquarepantsWhat the Bikini Bottom Undersea Party #3818 LEGO set is worth — loose, complete, and sealed.
Bikini Bottom Undersea Party #3818 value — Loose $50 · Complete (CIB) $120 · Sealed (new) $300. Prices updated August 2026.
Theme · LEGO Spongebob Squarepants
Live on eBay now
↗ Rising · +50%
Complete-in-box price history
Monthly CIB value, based on sold comps.
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Item details
- UPC / EAN
- 5702014842311
- Brand
- LEGO
- Theme
- LEGO Spongebob Squarepants
- Set number
- #3818
- Release date
- January 1, 2012
Bikini Bottom Undersea Party #3818 (LEGO Spongebob Squarepants) resale value
A loose Bikini Bottom Undersea Party #3818 set runs around $50, a complete copy (all pieces + box + instructions) about $120, and a factory-sealed box commands $300.
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 | $50 | eBay sold comps |
| Complete (CIB) | $120 | eBay sold comps |
| Sealed (new) | $300 | eBay sold comps |
Frequently asked questions
- What is the best deal for Bikini Bottom Undersea Party #3818?
- The loose version offers the most accessible entry point at $51, while the sealed option is best for collectors willing to pay $279.
- How much is the complete, unopened set worth?
- The sealed, new version of Bikini Bottom Undersea Party #3818 is listed for $279.
- Is the loose version still worth buying?
- Yes, the loose set is available for $51, providing a budget-friendly way to own this LEGO Spongebob Squarepants piece.
