I moved entirely to buying hardcovers. It is easier on the eye, and paperbacks, especially in India, are horribly bad quality. The cost is a matter of perspective (or geography). A typical hardcover costs ~₹2,000 (~$20) which is the norm, but that is a costly thing in India (is roughly the cost of the tea/milk supply for the whole month for my family.)
Of course, this makes me choose my books wisely and with intention. I’m still on the lookout for an ebook reader (no more Kindles). I still want to keep a good ratio where for every 5 ebooks, I should have at least 2 physical books.
So, books are NOT cheap, but the cost is what to consider if it is “worth it” to you.