But are they heavy?CCaduceusSeptember 10, 2011 Nike will be auctioning off "Back to the Future" MAG shoes based on the movies with proceeds going to Fox's Parkinson charity.Pretty neat.Comments (1)TT3muJin·Sep 10, 2011, 6:47 PMi think the first pair went for $35k\r \r \r \r GREAT SCOTT!!!