That isn't what I call shill bidding.
Unless he was using two names to raise the price.
shill bidding policy:
Shill Bidding is bidding that artificially increases an item's price or apparent desirability, or bidding by individuals with a level of access to the seller's item information not available to the general Community. Shill Bidding is prohibited on eBay.

If a seller or a buyer is involved in bidding that artificially increases an item's price or apparent desirability they are violating eBay's Shill Bidding policy. They may also be breaking laws regarding misrepresentation and fraud.

People with certain types of relationships to the seller may be restricted or prohibited from bidding. For example, family members, roommates and employees are restricted to using Buy It Now or other Fixed Price formats in doing business with the seller.These restrictions apply even if the bidder doesn't intend to deliberately manipulate an item's price or apparent desirability when they bid.

Please Remember – violation of this policy may result in a range of actions, including:
Cancellation of listings
Forfeit of eBay fees on cancelled listings
Limits on account privileges
Loss of PowerSeller status
Account suspension
Referral to Law Enforcement for criminal prosecution