APIs in Prestashop

[Mani Varma]

Hi Team , 

we are trying to build a multi vendor e-commerce platform. And we came across your tool.
We want to make sellers add their own products, change the products, display these products for customer. 

I'm new to prestashop..  Is the back office nothing but an Admin Panel which can do operations on sellers products categories and what ever Admins need?

Since we are not comfortable with the frontend of prestashop, we would like to use the APIs of the tool and create our own frontend from these APIs. Does Prestashop provide all of the APIs ?

APIs such as 
Signing up user, loging user, creating products, product listing, filtering, sorting, searching for products, Adding location to stores. 

also we want to add location to stores and add multiple stores using prestashop where all these stores will have their own seller panel. 
Can I implement this? and Can I use the APIs to build the frontend myself.

Please let me know the pricing. 

Thank you.

[Rhobur]

You can do this yourself using Prestashop's webservices or directly using its classes, all by means of a module you create.

It is all in the docs, https://devdocs.prestashop.com/.