HBO's 'Harry Potter' first season could average roughly $25 million per episode

Using Plum Jam Productions' earnings as a rough guide, Deadline estimates HBO's 'Harry Potter' first season could average £18.8 million ($25.2 million) per episode. The company's revenue rose from £18.4 million in 2024 to £130.6 million in 2025, but it has housed other productions, so the figures may include unrelated income. A source familiar with the show told Deadline costs are front-loaded because its sets should serve all seven seasons.