iTunes appstore scraper developer

Hi, I'm looking for an experienced programmer to develop an apple appstore scraper to get price drops from several international appstores into a database on a daily basis. You should have programmed several scrapers before and make suggestions on how to build the infrastructure such as servers and databases. Only apply if you have references to show and attach them. Agencies and developers with less than 4/5 rating will be ignored. Communication will be done via skype. Please us the codeword "circus" in the first line of your mail to make sure that you red the whole jobdescription. Thanks! Florian