More often than not, readers tend to gravitate towards the best-sellers put forward by top publishing houses, which are not cheap. These books are not offered at reduced prices, and thus the individual ends up spending not just for the books, but for the device itself. Moreover, e-readers function on electricity and their constant use require them to be charged more frequently, thus resulting in an increased electricity bill.
Reading books on e-readers also puts a strain on the eyes, which in serious cases may cause discomfort to the individual, forcing him/her to visit the doctor. On the whole, e-readers prove to be more expensive than physical books.