I'm selling an Acer AH101 Windows Mixed Reality Headset, cables, and two controllers. I've tested that it works with the Windows Mixed Reality Portal and Steam VR, but I only used only a few times. It's a great budget option for getting into VR games! Original price $400, but I got it secondhand in like-new condition for $80.

The screen flickers rarely when moving very quickly (e.g., Beatsaber), but reading online a cheap cable clamp from Amazon should fix this if you want to play more active games.