San Diego Convention Center, July 26th. Sunday at Comic-Con International — from $50 for a badge on the final day, the day when the floor has been walked and the big Hall H panels have fired and the convention finds the version of itself that keeps people coming back year after year. Sunday at SDCC is the day the cosplay is at full intensity because it's the last chance. The Exhibit Hall has deals that didn't exist Thursday — publishers moving stock, creators selling what's left of their limited prints. The energy is exhausted and alive at the same time: four days of maximum input produces a loose, generous, overstimulated …