At a loss for a while, John started to simply look at the other people moving around him. And that's when he began to notice an odd feeling around most of the people walking by. They didn't seem entirely... normal. Maybe that should be expected, given the cirmcumstances.
He frowned, inspecting them as closely as he could until one middle aged woman gave him a repugnant look. He quickly averted his eyes, taken off guard by the normal shaming in such an abnormal situation, and turned stiffly, starting to walk. Answers wouldn't come on the street corner.
He made it a few steps when a head of impossibly red hair caught his eye. He glanced at the beautiful young woman it belonged to, and then his steps slowed. There was something about her that was different, too, though not in the same way as the others.
Her reflection was bright in the glass, and he took a moment to observe her pleasure as she looked at the items on display. The hunger panged in his stomach, but no more than a man would really want breakfast after waking.
He stepped up to the glass next to her. His own reflection was missing, but most humans didn't notice trivial matters like that. Or invented excuses to explain it away.
"Half of these are fake," he said, sounding normal out of practice. Vampires found it easier and learned to hide the emotions of prey, like fear, or anxiety. He gave her a smile. "That compass, though. That looks almost a century old. And that vase has been greatly undervalued."