You are misunderstanding entrapment the way people always misunderstand it. If you offer a service (on the low) to do something illegal, and law enforcement calls you pretending to be a legitimate user of your service, that is not entrapment.

Entrapment is when law enforcement coerces you into taking an illegal action that you otherwise would not have taken. I.E. A federal agent telling you that if you don't walk into that bank and rob it, they will arrest you for (a planted) firearms possession.

This case is about whether the defendants actions actually were illegal, because PA law seems ambiguous about it.