You are wrong !!!
EBay Partner is a person who promotes ebay listings through eBay partner network -
http://www.ebaypartnernetwork.com/
You can join and promote eBay. You will paid commissions on listing fees once you someone goes from your affiliate link and buys something on eBay.
You can setup eBay affiliate stores like this -
Garmin GPS Systems
BANS works well for this -
Build A Niche Store - The eBay Affiliate Website Builder