Price grabber

I want a copy of this portugues website http://www.saveme.com.br. They grab promotional offers from others sites, getting the offers by xpath (html). The difference between that site and the one i want to buld is that i want a personal link for each offer and save it in my database. Links would increase visits from google and so on. Its quite simple. Get the websites html and insert into a simple database. The hard part of this job is getting the html of each of the 30 +- websites that i want to grab the offers.