That was actually one of yesterday's - I bought it then. Looking at my orders I see that I only bought one today, "Death at Wentwater Court" by Carola Dunn, the first in a detective series set in the 1920s which sounds quite entertaining.
EDIT: Reading through today's offers more carefully, I've just bought another:
Ninety Degrees North: The Quest for the North Pole - the story of the early history of arctic exploration, which sounds very interesting.