Aleena, my daughter, has always loved stories and books being read to her since she was really young. Once she learned the alphabet, I bought her books that were easy for her to pick up. But the impact of it was the opposite of what we expected; and over time, she lost interest in books since we would force her to read. That's when I got to know about Kutubooku. The first box from Kutubooku itself was a revelation. 
It was a hand-picked assortment of books tailored to her interests and age. 
That's when I realised that picking the right books was an art in itself. She loved each and every book, and they have wonderful life lessons too. 
I wouldn't call this subscription cheap, but it's absolutely worth every penny. I wouldn't have even known about the existence of these books or bought them otherwise!