I see from the blurb one is supposed to be the exact shirt the team are wearing. And is therefore official.
But I don't understand how pp says the other " looks like" a fan shirt because to me it looks just the same.
Perhaps if you could physically feel them and look at them there might be a difference in quality of material etc but certainly superficially they look the same imo.
I certainly wouldn't pay the difference in price for the first one.