It's free.

On September 6, the BAMF DLC Pack for Borderlands 2 will be released containing 16 pieces of content. All of it will be playable in VR via the PlayStation VR. Some of the included content includes Captain Scarlet and Her Pirate's Booty, Mr. Torgue's Campaign of Carnage, Sir Hammerlock's Big Game Hunt, and Tiny Tina's Assault on Dragon Keep. All of this will be updated for a single-player VR experience.

This release also allows VR players to finally play as Gaige the Mechromancer and Krieg the Psycho. This release also enables VR for all of the Headhunter DLC packs. This pack also includes all Vault Hunter Heads and Skin packs for free. And, of course, the Ultimate Vault Hunter Upgrade Packs are included in this BAMF release as well.

This was announced just a short time ago at PAX West and on Twitter.

In addition to this announcement, it was also revealed that VR support is finally being added to the PC release of Borderlands 2. There isn't a firm release date for this update just yet, outside of a general "Fall" window.