Oh the episodes have been $1 million a piece for a while. One million for an episode of a sci-fi show is a bargain. That's baseline. For reference: An episode of "Superman and Lois", the CW show, allegedly costs roughly 1.5 million dollar. As much as I dislike a lot of the visual decisions made by Chibnall it's clear the BBC spend money on his run. An episode in series 11-13 cost reportedly roughly 3.5 million