One of the most sought after sneakers ever also just become possibly the most expensive pair ever. A Hong Kong auction house has sold a pair of the new Back to the Future-inspired Nike Mag shoes for $104,000. SEE ALSO: A pair of Nike's 'Back to the Future' self-lacing sneakers could only cost you $10 In addition to hyping the iconic shoe, the auction served to raise money for the Michael J. Fox Foundation (MJFF), an organization dedicated to supporting Parkinson's disease research.