It's funny, because I'm sure there are a lot of people who would say, they would never buy a $1500 headphone.
It's all relative. Yes, you wouldn't buy a 50k DAC, but you don't (I'm assuming) have 50k to spend on a DAC.
But to a multi-millionaire, would it be a problem for them? Probably not. If I had a $100 million, yea I'd buy a DAC like that.