hmm.. The HTC VIVE PRO only comes with the headset only. i.e you need to have the HTC VIVE with it is hand and sensors for this to wrok. Then you will need to add $500 more to the price which will end around $1300 for the HTC VIVE PRO.
Correct me if am wrong as am looking for buy a VR headset.
I have the PS VR. It makes me sick. The two main games I have for it skips frames at 30 degree turns. This is what makes me sick with it. I'm very strongly considering getting a PC VR headset, but they are way out of my budget, especially with a huge vacation in the planning within the next couple of years.