It depends a bit depending on how you account for other machines and peripherals (given that you can reuse/replace parts when doing it yourself), but the general price off the top of my head was:

- CPU $1100 AUD

- GPU $3000 AUD

- RAM $1000 AUD

- Motherboard $279 AUD

- NVMe Drive $300 AUD

- SSDs $150 - 300 each AUD

- SATA drives $100 - 300 each AUD

- Powersupply $240 AUD

- Case $250 AUD

- CPU cooler $170 AUD

That prices the full thing as new at about $6000 to $7000 AUD, which is vaguely in line with about what I recall my budget being, though I've had it for a year or so now.

That would put it at roughly 4k - 5k USD by my napkin math, but as a general rule US consumer tech prices recieve a bit of a discount compared to us over here, so you could probably come in on the lower end if you could physically get everything (i don't know what part supplies are like at the moment in the US).

Taking the AU Apple store price, accepting that their CPU probably outperforms mine in some multithreaded performance, and going for the top GPU option, I'd price the Apple M1 Ultra rough equivalent between $7000 to $10,000 AUD depending on where you want to cut it.

So like for like i'd say 4k-5k USD for mine vs 5k - 7k USD for the M1 in my locality.