Answer

to Read-my-mind quiz.

The reasons mentioned by Victor and Chun See are among the reasons when I choose shows to watch or buy, but they are not the reason in this case.

The reason is economics - The Diviner has the most number of episodes. Of those Titles on display, the minimum number of episodes is 5 and the maximum is 11. The Diviner is the only one with 11 episodes. With the same price, isn't it more economical to pick the most?

After watching the Diviner I didn't learn any divining skills, only how to act like one ...

Put on a Taoist robe or a just a white one, look as if you are deep in thought, raise one hand to chest level and slowly use your thumb to touch your fingers one by one.