"An all tube, no transformer, unprohibitively priced, phonostage seems to be a unicorn. Nothing against SUTs, it just seems like a shortcut and another thing in the signal path that could affect the sound."
The "affect the sound" thing with an SUT is totally subjective. I'd be more concerned with having onboard SUT instead of adding one to an MM only phonostage. Why have more stuff-(SUT/IC's)?
There are likely other choices, but it's going to be a off the radar, small "boutique$" unit.
Seems the used NVO gets listed from an owner who either $teps up the food chain or gets out of analog. If you want something "reasonably priced" consider keeping on eye on the listings and be ready to jump on one.
Otherwise, all those suggestions of everything but your requirements are solid.