eBay Programs are regional eBay websites with localized product listings. You can become a member of more than 1 eBay program.
To generate RSS feeds with products from a specific eBay program you need to sign up for a local eBay program. Or you need to sign up for a specific eBay program. Here is a list of all eBay local websites:
Hong Kong: www.ebay.com.hk
United Kingdom: www.ebay.co.uk
United States: www.ebay.com