Thanks @gilescoley
From Namebio.com, I have picked up following prices:
I was curious about the prices of VR(-) hyphen type domains as my domain has hyphen, Namebio came up with following sales.
vr-games.net 3,000 USD 2016-05-19 Sedo
vr-city.com 4,500 USD 2016-04-13 Uniregistry
vr-vegas.com...