Hey everybody! Help a brother out: I can't tell what the heck the difference between a "replica" jersey and an "authentic" jersey is. Other than $130.

Trying to decide on a birthday present for the wife, and I want to get her something nice, but it seems like $100 for the replica jersey is what's up. As far as I can tell, they're the same thing minus the patches and crap? Are they the same material? Aargh.