It'll be interesting to see. Here in Canada there's good stock of cheap MSRP models like the Asus Dual or GB Windforce at CAD809, which is almost straight conversion to US$600. Better models are way more though, the TUF is $930 at 3 different larger retailers, so who knows what a Strix will end up going for. People say Nvidia is really pushing for MSRP and even the reaction is mixed at best, so I guess we'll see whether cheap stock will dry up and the top models are all that's available like Ampere, or better cards drift down when they don't move.
I can't imagine someone paying $700 for a Strix 4070, but people do crazy things.