Those old Lego sets you’ve got lying around could be worth a fortune as vintage Lego skyrockets in value ... LEGO Monorail Airport Shuttle (6399) [Pre-owned] - £10,900.00; ...

The first monorail ride was given in 1979, and the last rolled out in 2013. And not long after that, Gabe Emerson of St. Paul called the zoo to see if the monorail was for sale. (Courtesy of Gabe ...