First unveiled at CES 2018, the HTC VIVE Wireless Adapter is now up for pre-order. The VIVE Wireless Adapter itself costs $299, but you’ll also need to purchase a $60 wireless attachment kit if you’re picking up the VIVE Wireless Adapter for the Vive Pro. The purchase of the Vive Wireless Adapter does include a 2-month VIVEPORT subscription (roughly a $20…