Also, it might not be good to share your system cost with people that know how to listen either. I remember perhaps 2 good sounding systems costing over $100k that I've heard in the past 25 years. It would be slightly embarrassing to throw out a impressive sounding price tag for your system only for your visitors to not be too impressed with the actual sound of your system. Better to let them listen for themselves and have them ask questions about your equipment choices.
A big part of that is that the listening room matters a lot. Getting that right could be far more expensive than any other part of the system.