Are we talking about a Bb bass or an Eb Bari. My yearning for a Bb bass subsided when I realised it only goes four semitones lower than an Eb Bari. That would be about £4k per semitone. In the early (C1930's) Dance bands, the Bb Bass was ubiquitous. No electric and so much cooler than a Tuba. You can see one stood on the end in some Fred and Ginger films. play on a stand. No problem.
For baritone Harry Carney and Gerry Mulligan have it covered.
I'm talking about my bass sax which very unusually goes down to low A. I have got a SaxRax stand for it that is a playing stand but I haven't found a really comfortable position for it.
And then there is the issue of lugging the bass in its coffin-sized case to and from the car, the venue, the car and home.