"How do I become a valet?
Valets are carefully screened for inclusion in the program. Requirements include, but are not limited to: (1) ability to list 100,000 listings each month, (2) storage capacity sufficient to hold and manage items received for at least 21 calendar days, (3) ability to list items across all eBay categories, (4) physical presence in all major metropolitan hubs in the U.S. and (5) demonstrated ability to reach Top Rated Seller status on eBay within 90 days of starting valet services. "
Local smaller valets would be something nice, since as a seller and buyer on ebay I enjoy the occasional local delivery of an item which spares the hassles, pollution and the costs of shipping. You can come accross assholes too but that's part of the charm.
From the looks of it this is something they expect to be run by a small business with a few people.
Not many individuals have space in their home to store and turn over 100,000+ items in a month. Or have "Physical presence in all major metropolitan hubs in the US".
http://pages.ebay.com/sellforme/faq.html