The most important thing in domains you need to note is that any domain owner can ask for any price .. even if it's completely ridiculously absurd. The value of a domain is
WHAT IT SALES FOR ... not the asking price!
$150k for a name like that is at least 1000 times too much.
(BTW .. It is
not an auction as you mentioned above .. it is simply an asking price .. nobody has made a "bid" for it)
Plus if it's actually someone's name, unless it's a very popular name, then that is essentially "cybersquatting" .. pretty much the equivalent of trademark infringement ... UNLESS the seller has the same name and can justify needing the domain.
There are a few other exceptions where I believe a full name should be public domain in terms of domaining .. but that's more for public figures like presidents or historic figures, etc.
Another possible scenario for a huge price tag for a domain like that is if it's a random made up name with an existing business running on it (think Wendy's, or McDonald's, etc etc) .. but in those cases the domain has very little value, and the justification for the large price is the value of the actual underlying business.
I personally think that anyone who goes after full names of individuals other than what I mentioned above is in for a very bad 2017 .. and probably a few useless legal battles as well that they will very likely (and deservedly) lose.