All-in-One Price Comparison Web Software

I'm in need of a web-based software that will compare prices of all non-perishable products from across the internet.

Key requirements include:
- The software should extract data from e-commerce sites, price comparison platforms, and manufacturer websites, essentially "everywhere possible".
- The software must be a user-friendly, efficient web application.

Ideal skills and experience for the job:
- Strong background in software development, specifically web applications.
- Experience in creating data scraping software from various platforms.
- Good understanding of price comparison algorithms.
- Skills in user interface design to ensure the software is easy to use.
The software must work in tandem with seller amp sas, to compile a list of profitable products.