Automatic script needed for scraping various ecommerce website in India.

Automatic script needed for scraping various ecommerce website in India. We are developing a Product Review website. Requirements: We need to come-up with script which should able to scrap various ecommerce website like flipkart, amazon etc.., read the website and collect everything about the product and put in into our internal database as follows. Product by categories product by brands/manufacturers Product attributes, color, size etc. Product page url (deeplink) Product price, offer price, discount information’s etc.. Product image URL, Product review and ratings or anything which help to identify the products. Script should able to identify individual product correctly, insert into database, also should take care of any duplication of product while inserting into database. Script should handle data cleaning before inserting product into data base. If we have particular store API available, script should able to handle it, retrieve the data using API and insert into data base (suggestion need to handle it) If we have product XML feed available from store script should able to handle it as well. Need scripts which can update data automatically in future using API or without using API. update live data feed using API These scripts can be crawlers or can use API's of PRODUCT feed, also scripts can have individual parser based on website. Script should able to create tracking link based on affiliate informations. we will discuss in details once project is awarded to you. will give you list of website we need to scrap, but we should be able to change the script to scrap other website as well. Only freelancers with past project experience will be considered. Please send in links to similar projects done in the past. I need individual developer who love lots of coding, already worked in similar kind of projects and based on Bangalore.