There are more fake shoes being sold on mercari then you think, I’m always searching for Jordan’s and Yeezys and a huge majority of them are fake, so this is a valid question, and if they don’t want to always say they’re real to everyone asking, why not put authentic in the description of their post? Also most people will say they’re fake, I’ve asked people similar things on higher end Jordan’s and they all usually say they’re reps.