Kirana best price delivery application

Problem to solve: People have to go to multiple shops for checking best price. Then, they buy stuff they needed and wait for an auto/rikshaw to bring those goods home. They often need to go to multiple shops for different items

1. Buyer builds an order list and places the order from a mobile device
2. XYZ receives the order and finds optimal prices/shops to buy those items
3. XYZ sends "order picking boys" to gather items by pooling items from different orders
4. "order picking boys" bring items to XYZ warehouse where they pack each order
5. "order delivery boys" deliver orders, bring cash
6. XYZ gets feed from local big shops and distributors containing item prices for that day
7. XYZ and distributors settle finances later by reconciling transactions