For the past few years StockX has seen its reputation take all kinds of hits with customers accusing them of selling fake sneakers and Nike essentially solidifying as much in a court of law.
Farronato, Chiara, John J. Horton, Annelena Lobb, and Julia Kelley. "StockX: The Stock Market of Things (Abridged)." Harvard Business School Case 621-107, April 2021. (Revised July 2021.) ...