Too many here seem to have an issue with wrapping their heads around overlapping market segmentation...
Compare the M1 Max Mac Studio with the 14" M1 Max MacBook Pro...
Any way you configure (both using the M1 Max SoC) the two, the laptop is always $900 more than the headless desktop...
So with that in mind, the base price for a theoretical double-binned M1 Pro Mac Studio (8/14/16/512) should be $1099; the same price as the current low-end of the 2018 Intel Mac mini on the Apple website...
Do a bit of configuring, of course you can get a M1 Pro Mac mini that costs the same as the M1 Max Mac Studio, but the specs will be slightly different (1TB versus 512GB SSD, and Gigabit versus 10Gb Ethernet)...
And do we know if the M1 Pro can support the same amount of ports as the M1 Max, or would a M1 Pro Mac Studio have "charging only" USB-C ports up front...?