Thanks BroNice picture-signature thing.
Take a small real life example of Narutoworld.Where do you get these things? You don't know, if Nagato ''borrowed'' the Rinnegan, nor do you know, if it costs more chakra. Nagato was using the Rinnegan all his life + Madara has unlimited chakra. How do you even measure it lol?
Uchiha Itachi has Sharingan, he have mastered it to the level that he can keep it on ALL the day long with minimal or no chakra drainage.
At the same time, Kakashi has also mastered the Sharingan as much as Itachi, but he cannot use it to that extent as Itachi. He can only use it to 3-4 hours max continuously.
Why?
Coz Sharingan is Itachi's bloodline limit, it is in his blood to able to handle the chakra control and mastery of Sharingan, whereas Kakashi lacks such strength and chakra to control the Sharingan.
Same goes with Madara and Nagato. Madara's body is made to handle the Rinnegan, but Nagato's didn't.