Price purchase management module

Project summary: We need to develop a project called PPM that will collect products from different suppliers to build our catalog for our BtoC store.
This project can be divided into three parts:
- Import of products/categories/brands... from different suppliers into a common database
- Backoffice interface for data management
- Master Catalog : it is the final export catalog that we have to provide to the BtoC store
All the details and functional and technical specifications of the project can be found in the attached PDF document. Please read the document carefully to understand our expectations and make a good estimate of the time and price.
You can send us by message your estimate of time and price