When it gets down to the nitty gritty, why does it matter? If people want to talk about money, can't they do that without being labelled vulgar? I have never seen a complaint that talking about leg waxing is vulgar.
By the same standards, talking about your childbirth experience is pretty vulgar, but most mothers will rabbit about that for days on end - myself included.
If something as innocuous as money is vulgar, what can we talk about?