EBay has said they are keeping an eye on the suspected seller. He may be gone the next time you look for him.
However, since you placed the bid, you are deemed to have been happy enough with that price, before you suspected that there might have been an attempt to push the price higher.
For example.
Say you bid $25 on an item with an opening bid of $10. The bid opens to you at $10.
A shill bid comes in for $30 and is retracted. The shiller now knows your high bid is $25. He bids $24 and you win at your full bid of $25. (A shiller never wants to win, he wants you to pay as much as possible when you win.)
But you placed the $25 bid, no one forced you to. You could have bid only $10 if that was all you wanted to pay.
If a real bid had come along for $24, you would have paid the $25 you did. If a real bid had come along for $30, that bidder would have won at $26 and you would have lost by a dollar.
So really, you are not hurt by the shilling, although it is definitely a bad thing. You just won at the top of your budget.