Almost 1000 online shops across Europe upload their product data into the affilinet product database. Thus - affilinet offers you access to up to 17 million product offers across Europe.
In order to access the data, you have to have a partnership with the respective advertiser(s). You can use the product web services to run queries on the product data, download the category structure of a shop, get a list of all accessible shops and their offers, and much more.