I started on a dell over a year ago. Paid nearly double that. Great price.
Here's some tips for you:
A device like this can be great for mic audio https://www.amazon.co.uk/Movo-MA1000-Omni-Directional-Calibrated-Smartphones/dp/B017TJXC8G/
A device like this can help fix power problems (Including random static, you'll know what i mean when it happens https://www.ebay.co.uk/itm/2-Ports-PCI-E-USB-3-0-with-4-Pin-molex-and-19Pin-20Pin-PCI-Express-Card-Adapter/363060013042
If the hinge breaks, and the headset flops around as a result, you can secure it with a velcro strap, under the face cusion, then around the head-band. (This, in my case, actually secured it closer to my face)
1.5V is better than 1.2V, but 1.2V works. I have 1.5V for my VR, but all my batteries for everything else are 1.2v. in a pinch, i've used them just fine.
Keep the controllers in view immediately after turning them on. Some sort of bug can cause them to turn off right away if you don't.
You can put you hands behind your back, just not for long.
If you're the wrong height, go to the floor adjustment BEFORE opening a game. The floor adjustment program closes anything else open.
Looking at the floor may fuck up your tracking.
Have fun!