Tasmac — Charging 10 More than MRP

I'm from Panruti. In Panruti there were
2 Tasmac at Panikankuppam and 1 at link road. These three Shops always charge Rs 10 more than the MRP rate. If we ask they will say if you want means this will be the rate if you have guts go and complaint to anyone money goes to everyone...
I bought a Kingfisher Beer it's MRP is Rs 150 they Charged me Rs 160.. for any kind of drink they are charging 10 to 20 Rs extra...

In that shop itself there will[protected] Bottles per day will be sold which means per day they earn Rs[protected] Per month One lakh fifty thousand per Year eighteen lakhs by charging ₹10

Not only in Panruti the shops in Kadampuliyur and Mettukuppam charge Rs 15 More than MRP