Apparently no one wanted to fork over $400k for a Vader costume that is “believed” to have been made for The Empire Strikes Back. The suit went up for auction yesterday, and it didn’t even meet the reserve price.
For something as big as an Empire Strikes Back costume, the seller should have made an effort to verify its authenticity. Trying to sell a prop you believe is authentic isn’t that smart. If the costume was verified as being an actual Empire Strikes Back Vader suit; it may have actually sold.