Data Scraping & Notification Software

The software should function as follows: 1) It can use all the search functions as shown on: [login to view URL] and [login to view URL] 2) It will build up a database of results from the search (i.e. [login to view URL]%2c+wa+6155%3b+/list-1?includeSurrounding=false) 3) Then automatically it will rescan the set search in time limits determined by the user (i.e. daily, 2 days, 3 days weekly, monthly) 4) It will then notify the user if any of the search results have had a price change, the percentage change +/-, if the search listing is removed or a new listing comes on. 5) This will be automatically emailed to the user in an excel form.