So uh, he's offered to join the princess and the Duke's daughter he likes in their traveling party and potentially become a royal magician, and traveling with them would also put him in a position to get rid of Albat eventually, but instead declines because he's a simple adventurer without a title (even though traveling with them gives him a path to a position of status and importance), deciding instead to later create a dungeon to entrap them, despite already being on their good sides. Then goes off to do what any simple adventurer without noble status who's too low class to travel with royalty would do: outbid an entire room full of noblemen and merchants by 100 million currency above the next closest bet to buy a slave. You know, just humble, average adventurer things....