Unless you wheel and deal their line starts around $13k for their smaller model, and goes up from there.

My experience admittedly is just my uncle who has one for as long as I could remember and my dad being a corporate pilot worked for a lot of Uber wealthy people and when he wasn't flying they always had him doing random shit, trying to fix their sub zeros in their various houses ended up being a big part of his job. Condensers/fans/compressors went out on them, no more often (probably less often) then on a consumer fridge, but the repair costs were much much higher. $2k repair calls weren't out of the question from what I recall. It's been probably 5+ years though so maybe things have changed.