So let's set a baseline for you.
CPU: i9 or Ryzen 9 3rd Gen
RAM: 32 GB
GPU: RTX 3000 series
This means, for the most part, you have storage to play around with and maybe power supply. That will give you the opportunity to control pricing by about $500+ depending upon how much or little you want to live with.
There are also three options in the RTX 3000 series that can also impact cost. Again, if you're willing to spend up to $3,000+, I see no reason why you shouldn't at the very least go with a 3080. Most humans really do not "need" a 3090...but for those of us beasts who sim in VR, its looking like a wise investment.