one successfully running supermarket makes around 50k to 1 lakh sales per day. Assuming A grocery delivery app without boundaries makes around 10 lkhs sales per day at Rs.300 average bill then total daily customers are 10lkh/300 = 3333 customers per day. 3333 customers X 100MB data per customer per day average = 333 GB per day X 30 GB = 10TB most servers provide free 10TB of data. 10TB X$10 per TB = $100 per month cost