Scrape data from any ebay data research tools

I would like an app that would replicate the data calls made by a ebay research tool. The app would need to send the request for the data based on keyword and then return various values that the ebay research tool pulls. The purpose of the app is to take the data that these paid subscriptions allow access to and apply it logically to my creation of ebay listings. Some of the available sources are: Hammertap, terapeak, auctionintelligence, get4it.com. If you have any other method of making use of ebay data calls without having to pay $250+ per month I'm up for suggestions. -- The rest of my application that will follow should this be possible is already through the planning stages but this is the first step. Please bid on accomplishing this task first as I know the rest of my programming requirements for the app are elementary and we can work out the price on the remaining next.