>>327693073
There isn't one that's good. Facebook sells all your privacy and its how they sell things for so cheap. You'll have to find a used one, but good luck finding anything but an original HTC Vive for used in that price range, which is equal to your original rift.

Closest option would be the Reverb G2 at 600 dollars. You can maybe grab one for 500~ if you're lucky with a used one. But you really want a 2080 or better if you're using that.