web scrapping

Project : web scrapping Ability to scrap a number of websites the following info: Site Name Site URL city (you must then scrap all the city pages) with the following : city RRP Discount % Discount $ BUY Price Total Sold Merchant Merchant ph Merchant fx Merchant website Screenshot of page pdf of page Total coupons Total Saving Scrapping needs to be done (every 5 or 10 mins ) we need ability to change this when required. I will provide the list of about 30 sites to start with and then need a way to either add a new site or edit or you to add each site for $20 this data should be stored in mysql database and then Website to display the data (which will be a seperate project) Winner of project will have first option to develop the site to show the data which needs custom features such a compare one site v another site , city v city, date range, (ie 7 days, 30 days, custom range) etc et c You will be required to do a proof of concept for free (as there are a number of software application that can do this) the winner will then get the list of sites to do and you will have 3 days to complete Full source code, documentation and working application (site) to grab the data is required. NOTE: the display website project will be posted as a seperate project however feel free to provide and estimate for this ($100 to $200 range)