I don't know why so many people here are so confident that the original poster will win the case. Personally, the original poster concerns is that the seller would lie the eBay and say that these damaged suits are NOT the same ones that she sent to the original poster.
If this is the case, it would be extremely difficult to fight back.
Anyway, I'm so sorry that you have to go through this. It sucks, but you will learn from this BIG TIME.
I don't know if this is a good tip to prevent this from happening to you and any of us. What I would do is to get a video recorder and get everything recorded from the second that you receive the box until you actually can see what is inside the box.