You've seen Dragonborn helmets made out of yarn. You've seen Dragonborn helmets made out of bacon. Both were awesome, but hardly practical. Now, this real Dragonborn helmet, you could crack some skulls with this.
This replica helmet is actually about as authentic as you could hope for, as the seller claims it was cast from the same mould used for Bethesda's life-size promotional statues.
There's only one available, and it cost $300. That's a lot for a helmet, but what price Dovahkiin?