About Monorail Transport Base
Monorail Transport Base (6991-1) is a LEGO Space set released in 1994, currently averaging $674.36 used on BrickLink. It comes with 3 minifigures worth a combined $34.18. The set has retired from retail, so secondary market is the only option.
Part-out value
The minifigures make up only 5% of this set's value ($34.18 out of $674.36). The bulk of the value is in the parts or the set being complete. Sell it as a complete set if possible.
Seller notes
- Sealed copies sell for $3730.04 vs $674.36 used — a 453% premium. If you have this set new in sealed box (NISB), price it accordingly.
- This is a vintage set (1994). Condition of the box and instructions significantly affects value. A complete set with original box and instructions can sell for well above the average.
Minifigures in Monorail Transport Base (3)
Common questions about Monorail Transport Base
How much is LEGO Monorail Transport Base (6991-1) worth?
Monorail Transport Base sells for an average of $674.36 used and $3730.04 new/sealed on BrickLink based on 6 months of completed sales. As a retired set, prices tend to hold steady or appreciate over time, especially for complete sets with original packaging. Actual prices vary with completeness — missing minifigures or key parts will lower the value.
What minifigures come in LEGO set 6991-1?
This set includes 3 minifigures: Spyrius Droid (Major Kartofski) ($6.32), Unitron ($9.41), Unitron Chief ($9.03). The minifigures have a combined BrickLink value of $34.18. Each figure is linked above with individual pricing if you're looking to buy or sell specific characters.
Is it worth parting out LEGO Monorail Transport Base?
The minifigures make up about 5% of the set value ($34.18 out of $674.36). Most of the value is in the complete set package, so selling it whole is likely the better move unless you have buyers lined up for specific figures.
Is LEGO Monorail Transport Base (6991-1) retired?
Yes, Monorail Transport Base was released in 1994 and has been retired from retail for several years. Retired LEGO sets are only available on the secondary market through BrickLink, eBay, or other resale platforms. At its current price point, it has appreciated since retirement.
How do I check if my Monorail Transport Base set is complete?
Use the parts list on this page to check every piece and all 3 minifigures. For the minifigures specifically, you can use the brick'em scanner to identify each figure from a photo and confirm it matches what should be in this set. Missing pieces can be individually sourced on BrickLink.