I really doubt it will be over $50,000 US - we will just have a vanilla optioned R, without a lot of the extra expensive bits that the UK can choose from.
Remember, US and especially Canada, we pay less for cars compared to the rest of the world. Mostly because we don't tax like everyone else.
I think the Golf R will be 2019 Golf R + $3-5k
The new RS3 rumours will make it way too hot and tempting for VW to compete against price wise - plus the car looks alone, compared to the Golf R...going to be a long wait till September when it is officially released. More power out of the 2.5T (looks like it's getting the same treatment as the R), and the Haldex system will be upgraded to the new rear diff in the MK8 R. Plus it will need to be priced to compete with the A45 / M2.
https://www.motor1.com/news/496334/2022-audi-rs3-spy-images/
Still stuck with the camouflage, but the RS3 LMS is a pretty good indicator when you remove the spoiler and diffusers. The front dams are functional, the rear bumper is fixed, according to spy reports, and most importantly, it will have the 'RS' wheel arches that gave the B7 RS4 the presence it deserved. I already have a Golf R, need an upgrade, so quite biased.