Can someone find a theme similar from a website I like that is not in CMS? example: ars.com
Maybe there is no such theme in Themeforest. It’s a custom design. You should hire me or a freelancer from Envato Studio to get your work done. Cheers. 
How much would a site like that cost?
Share your skype id, please.
A per forum TOS please do not share emails, Skype etc https://forums.envato.com/tos and only use profiles, Envato Studio etc