If you look at midseason trade returns for comparable pitchers, I don't think you're going to like what you see. Actually, it seems most comparable guys don't even get dealt because the potential return is so minimal. Even if Pelfrey still somehow has a 2.28 ERA at the end of July, you're almost certainly better off riding whatever voodoo witchcraft is going on rather than trying to flip him for anything meaningful, given his history. (FWIW, he had a 2.23 season ERA on June 12, 2010 too, in more innings than he has in 2015.)