# Bikini Bottom Undersea Party #3818 price

The LEGO SpongeBob SquarePants "Bikini Bottom Undersea Party" set #3818 has a typical used resale value of around $120.50, based on real eBay sold comparisons [1]. Sellers are currently listing similar used versions for around $139.99 on average [Live eBay asks]. This price reflects the set's value in the used condition — if yours is in sealed or like-new condition, its value could be higher. You can check the live eBay listings shown to compare current asking prices.

## Items referenced

| Item | Used | New | Page | Sold comps |
| --- | --- | --- | --- | --- |
| Bikini Bottom Undersea Party #3818 — LEGO Spongebob Squarepants Set Value | $120.5 | $302.5 | [view](https://junkpal.ai/products/bikini-bottom-undersea-party-3818-lego-spongebob-squarepants-lego) | [eBay](https://junkpal.ai/api/go?to=https%3A%2F%2Fwww.ebay.com%2Fsch%2Fi.html%3F_nkw%3DBikini%2520Bottom%2520Undersea%2520Party%2520%25233818%26LH_Sold%3D1%26LH_Complete%3D1%26mkcid%3D1%26mkrid%3D711-53200-19255-0%26siteid%3D0%26campid%3D5339166094%26toolid%3D10001%26mkevt%3D1%26customid%3Dmd-answer-sold&p=md-answer-sold) |
| LEGO Bikini Bottom Undersea Party (3818-1) | — | — | [view](https://junkpal.ai/products/lego-3818-1) | [eBay](https://junkpal.ai/api/go?to=https%3A%2F%2Fwww.ebay.com%2Fsch%2Fi.html%3F_nkw%3DLEGO%2520Bikini%2520Bottom%2520Undersea%2520Party%2520(3818-1)%26LH_Sold%3D1%26LH_Complete%3D1%26mkcid%3D1%26mkrid%3D711-53200-19255-0%26siteid%3D0%26campid%3D5339166094%26toolid%3D10001%26mkevt%3D1%26customid%3Dmd-answer-sold&p=md-answer-sold) |

eBay links are affiliate links: JunkPal may earn a commission at no cost to you.

_Updated 2026-08-08._

---

Source: [https://junkpal.ai/answers/bikini-bottom-undersea-party-3818-price](https://junkpal.ai/answers/bikini-bottom-undersea-party-3818-price) · JunkPal price guide (junkpal.ai)
Values are medians of real closed eBay sales — estimates for reference, not offers or appraisals.
More machine-readable surfaces: [/llms.txt](https://junkpal.ai/llms.txt)