Murugan Idli

E. 149, Murugan Idli Shop, 1, 6th Avenue, opp. Velankanni Church, GOCHS Colony, Besant Nagar, Chennai, Tamil Nadu 600090, India

Most of all, get the Onion Rava Masala Dosa.  The key dishes there cost not much more than one dollar, sometimes less.

Is there any general model as to why, so often in the world of food, price and quality are negatively correlated?