Multi Vender E-commerce app (iOS & Android) with admin panel

Please share the budget , Timeline & any project which you have done already as per the below requirements

Platform :
- Both native iOS & Android and flutter apps are fine
- You can buy the code from any platform like CodeCanyon and customise

Admin Panel :

To approve the users
To register the suppliers
Charts include :  
1-Total inventory of stocks
2-Total number of venders comparing with number of customer
3-Delivery options as per area coverage
4-Ratio of supply and demand
5-Export and Import
6-Access to the suppliers feed quality

Suppliers :
Create products under different categories
Manage the inventory
Mange the orders
Reporting : some charts for his information
Notifications when running out of inventory

Customer :
Login with mobile number
UI to show venders on map with
Click any vendor will show all his services
user can add to cart any product
Filter : select radius , select supplier , select supplier cat

Payment Gateway :
Cash on delivery
Paypal
Pay with credit card
Smart pay - Any suggestion


Note :
1 - UI should be very friendly
2 - Languages : English / Arabic / Urdu / Pashto
3 - Accessibility > Voice over feature should be added * more important
4 - Sample apps : Talabat & CAFU
5 - Suggestion : How to make payment more easy for the user