The elf smiles and listens and nods with the patience of a man waiting to see what he can get out of this. When Danny drops the name Caelus he'll see exactly that spark of recognition he was looking for, followed by the vendor taking a moment to reassess him. Wondering all the more what he can get out of this green boy.

"Caelus, hm? I've done business with him before. And you must be an apprentice mage yourself. How... interesting. And what has young Caelus sent you all the way down here for? More potion ingredients? Spare robes?" He seems quite willing to cut some manner of deal; whatever Felix's reputation, it clearly doesn't involve cheating his suppliers.