I bought an Oculus Rift CV1 and it was an insulting experience. Huge amounts of enforced updates, internet connection abuse, and general Facebook shenanigans. Fool me once... I will buy one when it's an open platform or standalone peripheral. Not before.
As for open standalone platform, Lynx will soon become available. https://www.kickstarter.com/projects/stanlarroque/lynx/
Would you also pay double that amount? That's how much it costs where I live and probably in many other places too. And you can say what you want, even $300 is not an amount I want to risk going down the drain because Facebook had yet another wave of "oops you're banned now too bad" events.
I will not even touch anything Facebook for free nowadays, to be honest. It's only a matter of time until great alternatives exist.