>>285978258
If you really want a headset, it's either the Quest or a Samsung Odyssey for 235-300 USD, which has slightly worse tracking than the Rift S and a non-removable cable.
Those are the low cost options, there are also other WMR headsets for real cheap.

If you decide to pick up the Quest, please ask for the receipt from the original owner so you can get Oculus support if anything breaks.
But honestly I don't know if there are cheap options, I started with a Rift CV1 and had fun with that; considering this, anything is better than that today, minus the tracking.