How has Parle-G managed to keep their price so low despite the steep inflation in India?

If you have grown up in India in the last 40 years, the chances are that one of your favorite snacks is the Parle-G.  But the prices of Parle-G have remained pretty stable all these years.  It is cheap and still has the same taste as it had when I was 5 years old.  It was my favorite then.. its my favorite now.  Here is now it has maintained its pricing so low.
Read Quote of Sneha Prasad’s answer to Biscuits: How has Parle-G managed to keep their price fixed for over a decade despite the steep inflation in India? on Quora