It’s not an authentic as in it didn’t come from UND - authentic swifts were only available from UND as they were all game worn.
However, that is an authentic repro. from K1. There are some inaccuracies as the customization goes - nameplate letters are too thick and the numbers are the wrong style. Still a nice jersey.
As as far as value, depending on the size, you’re looking anywhere between $125-$150 in my humble, incomparable opinion of course.