# Robot Inventor #51515 worth

Based on the catalog information provided on your screen, the **Robot Inventor #51515** is listed with a used value of **$499**. Since the second item, "LEGO Robot Inventor (51515-1) (Mindstorms)," is unpriced in the catalog, I cannot give you a specific valuation for it. For the #51515 set, the typical value is driven by its condition and completeness, and you can compare the current asking prices against the sold values shown on the page to see how it's trading right now.

## Items referenced

| Item | Used | New | Page | Sold comps |
| --- | --- | --- | --- | --- |
| Robot Inventor #51515 — LEGO Mindstorms Set Value | $499 | $650 | [view](https://junkpal.ai/products/robot-inventor-51515-lego-mindstorms-lego) | [eBay](https://junkpal.ai/api/go?to=https%3A%2F%2Fwww.ebay.com%2Fsch%2Fi.html%3F_nkw%3DRobot%2520Inventor%2520%252351515%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 Robot Inventor (51515-1) | — | — | [view](https://junkpal.ai/products/lego-51515-1) | [eBay](https://junkpal.ai/api/go?to=https%3A%2F%2Fwww.ebay.com%2Fsch%2Fi.html%3F_nkw%3DLEGO%2520Robot%2520Inventor%2520(51515-1)%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) |

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_Updated 2026-07-18._

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Source: [https://junkpal.ai/answers/robot-inventor-51515-worth](https://junkpal.ai/answers/robot-inventor-51515-worth) · 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)