Even on 12102 Jnaneshwari Delx Meals on Wheels guys sell Dinner/Lunch at ₹.120 which it's not worth.
Reason is they have many buyers whom readily buy at any price. In a recent journey by my sister in 12860 Gitanjali Express on 14/07/16 (Sunday) was charged ₹.170 for dinner which she demanded bill & when it was refused, she threatened to complain over Twitter, then only they returned ₹.100 to her! While co-passengers were least bothered about this over charging, so just imagine what's mentality of people!