August and September are two of the best months to profit selling sports cards. With baseball prospects like Jace Jung and Junior Caminero getting called up, to guys like Justin Fields, Caleb Williams, Hendon Hooker and even Spencer Rattler and Sean Clifford being up huge due to their performances in the NFL Preseason, and the injury impact of J.J. McCarthy being out for the season and Sam Darnold taking over as the Vikings unquestioned starter and full time signal caller - prices are moving huge, and you need to be aware of which cards to list and sell. Let's dig in.