The site doesn't track sales of accessories. It's too bad there isn't a game bundled with every sold unit like there was with the Wii Fit (which still didn't track every sale once the Wii Fit was available separately later on).
well the game PSVR Worlds is bundled with some VR devices (the software is often in software top 20 in the UK because of that).
The game is tracked at 0,00 units here thogh, so there is something off.
The PSVR/VR devices in general (also Rift, Vive und WMR) arnt just an accessorie to a console though but seperate own plattforms with seperate games and completly different gameplay. Price is also similar to a full console. Definitly not something like the Kinect, Balance Board or Eyetoy.