# Monorail Transport Base #6991 worth

The Monorail Transport Base #6991 is valued at $551.42 used according to the catalog data. Since the second item, LEGO Monorail Transport Base (6991-1) (Unitron), is unpriced in the results, I cannot provide a specific value for it. For the most current buying or selling decisions, you can compare the sold value against the live asking prices shown for item [1] on your screen.

## Items referenced

| Item | Used | New | Page | Sold comps |
| --- | --- | --- | --- | --- |
| Monorail Transport Base #6991 — LEGO Space Set Value | $551.42 | $3003.11 | [view](https://junkpal.ai/products/monorail-transport-base-6991-lego-space-lego) | [eBay](https://junkpal.ai/api/go?to=https%3A%2F%2Fwww.ebay.com%2Fsch%2Fi.html%3F_nkw%3DMonorail%2520Transport%2520Base%2520%25236991%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 Monorail Transport Base (6991-1) | — | — | [view](https://junkpal.ai/products/lego-6991-1) | [eBay](https://junkpal.ai/api/go?to=https%3A%2F%2Fwww.ebay.com%2Fsch%2Fi.html%3F_nkw%3DLEGO%2520Monorail%2520Transport%2520Base%2520(6991-1)%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/monorail-transport-base-6991-worth](https://junkpal.ai/answers/monorail-transport-base-6991-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)