Merlin didn't kid himself that he was the sort of attractive like Arthur or Lancelot, two men who drew the eye immediately. He rather hoped he was the sort that snuck up on a person, that they might grow to enjoy his appearance as well as his company. So he was lightly flattered that Luna showed him a modicum of interest, even though he knew it was part of her job.
"Anything at all," he said generously. He had the feeling he was going to end up giving away a first edition of something by the end of the night. Oh she was very good. He respected that.