No, I don't think you could get a good stereo dac for much under $50k. But you might be able to talk Esoteric in to selling you just one of their monoblock dacs so you could have decent mono sound for well under $50k. They sell the stereo pair for $55k.
Is it possible to find a good DAC for under $50, 000?
Apparently, the good folks at The Absolute Sound have you covered.
https://www.youtube.com/watch?v=nItR8Z6CCWE
(Audiophiles are never going to shed their out of touch reputation with journalism like this. I'm sorry, but it's just so tone deaf.)