Auto-Crawler, for crawling merchants' websites to get products and prices, and store into database and generate a CSV download.
Generate comparison report for 2 or more merchant products and prices highlighting the difference in prices or products.
Information to store would be Product name, prices, manufacturer, product code, link, image link, description etc.
The script should be performance based, and should not generate heavy load on server or the merchant site.
We are not looking for website copier.