# Sea Serpent #40912 — resale value

Source: JunkPal price guide — https://junkpal.ai/products/sea-serpent-40912-lego-ideas-lego

**Sea Serpent #40912** is worth about **$36** loose, based on real closed eBay sales. Sealed or new examples sell for around **$41.5**.

Live listings and the full sold-price history are on the page: https://junkpal.ai/products/sea-serpent-40912-lego-ideas-lego

## Value by tier

| Condition | Value (USD) |
| --- | --- |
| Loose | $36 |
| Complete (CIB) | $25 |
| Sealed (new) | $42 |

Values are medians of real closed eBay sales, updated 2026-08-06. They are estimates for reference, not offers or appraisals — condition, completeness and edition move them a lot, so compare against the sold listings before pricing anything.

## Check the market

- [Sold listings on eBay](https://junkpal.ai/api/go?to=https%3A%2F%2Fwww.ebay.com%2Fsch%2Fi.html%3F_nkw%3DLEGO%2520Sea%2520Serpent%252040912%26LH_Sold%3D1%26LH_Complete%3D1%26mkcid%3D1%26mkrid%3D711-53200-19255-0%26siteid%3D0%26campid%3D5339166094%26toolid%3D10001%26mkevt%3D1%26customid%3Dmd-sold&p=md-sold) — the closed sales these medians are computed from
- [Live listings on eBay](https://junkpal.ai/api/go?to=https%3A%2F%2Fwww.ebay.com%2Fsch%2Fi.html%3F_nkw%3DLEGO%2520Sea%2520Serpent%252040912%26mkcid%3D1%26mkrid%3D711-53200-19255-0%26siteid%3D0%26campid%3D5339166094%26toolid%3D10001%26mkevt%3D1%26customid%3Dmd-live&p=md-live) — what sellers are asking right now

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

## Details

| Field | Value |
| --- | --- |
| Brand | LEGO |
| Theme | LEGO Ideas |

## Sea Serpent #40912 (LEGO Ideas) resale value

A loose Sea Serpent #40912 set runs around $36, a complete copy (all pieces + box + instructions) about $25, and a factory-sealed box commands $42.

### 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.

## FAQ

**Is Sea Serpent #40912 still in its original packaging?**

Yes, the set is described as sealed (new).

**What is the theme of this LEGO set?**

The theme for Sea Serpent #40912 is LEGO Ideas.

**What is the current asking price for this item?**

The sealed, new price for Sea Serpent #40912 is $59.

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Full price guide: https://junkpal.ai/products/sea-serpent-40912-lego-ideas-lego
How these values are computed: https://junkpal.ai/methodology
Cite as: "JunkPal price guide value as of 2026-08-06, based on real sold listings (junkpal.ai)"