HEY, do what I do.
If indecisive on the worthyness of paying for a VR headset, do the following.

I'm a PS+ member, that means I get stuff for FREE every month.

Each month, there has been a Free VR game.
If you want that VR game, You Don't need to download it NOW, you just need to add it to your Download list of games, once added, you can download at your pleasure.
All games, be they already downloaded or not, will appear on your Download list .

I'm very thankful of this , as I'm very close to filling my PS4 Pro's 1TB HD