Develop web scraper to collect prices and stock quantities from a supplier's website

General information for the business: We sell tyres online
Description of requirements/functionality: I am looking for someone to develop a web-based solution using existing scraping tools to interrogate a password protected e-commerce website (user name and password available) and report back the product size/name, price and stock quantity for about 300 specified products. Product is tyres, and the individual products are found by a tyre size search. Roughly 200 different sizes to search. I can set up a linux website to host the application developed. Screenshot attached shows format of data for a specific search. "default" is the stock quantity and "cost" is the price. Quotes please.
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