Extract data from eBay without the risk to be blacklisted. (the right way)

Hi have some clients that are currently selling on eBay and they want to integrate their listing into our software for easy management. What I'm looking for is someone that can create a software in PHP that can extract some data from listing on eBay. You need to have already done this because I don't want to run it and that eBay blacklist my IP and don't want to deal with proxy. If you can do this with eBay API this is better. What I need is a PHP page that I can paste a store name and the web app will start extracting the data with a progress bar. It can also be a Windows application if you're more familiar and for good reason. Example this store: [login to view URL] I need all the listings. - Title - Price - All the images in the best resolution possible With the app you need to provide all the data of the previous store link as a proof that it is working. The data must be extracted to a CSV file that also include a columns that provide the name of the images found for each listing separated by pipe. Ex: 2013-14 BLACK DIAMOND ELIAS #1/1;174.99;[login to view URL]|[login to view URL]