Looks like Gal Gun 2 and Gal Gun 2 - VR DLC is on sale.
Is the Gal Gun 2 + Gal Gun VR DLC all I need to play Gal Gun 2 in VR?
16€ looks like a good deal.

https://store.steampowered.com/bundle/9145/GalGun_2__VR_Bundle/