Your question is not clear. I take it you live in NY and were sued in PA??? If that is the case, the issue is whether the plaintiff can establish that the PA court has jurisdiction over you such as under a long-arm statute. If you were doing business in PA (ie sending goods there) you may be subject to PA jurisdiction. Retain a lawyer in PA to defend you.
I am a former federal and State prosecutor and now handle criminal defense and personal injury/civil rights cases. Feel free to check out my web site and contact me at (212) 385-8015 or via email at Eric@RothsteinLawNY.com. The above answer is for informational purposes only and not meant as legal advice.
As my colleague notes, this is a jurisdiction question, and many courts have held that sales on eBay and other internet platforms where the seller advertises to those in all states, does give a court personal jurisdiction over a buyer in the seller's home state.
Another issue here is the statute of limitations for breach of contract in the operative state.
If you've been sued, you need to hire a lawyer to defend you, and you need to do this quickly before your default is taken.
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As the others mention, Jurisdiction seems to be the issue here. The question I have for you is if, and how, you were served with notice of the Pennsylvania action. This will control how and when you have to answer.
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