There are two schools of thought afloat;
1) is terroir. It does not matter who the winemaker is, but the source of the fruit reigns supreme. The french do not even have a word for 'winemaker'.
2) winemaker fame. Little attention to source and more to who. This seems to be more American.
I subscribe to a little of each. I have seen great sources ruined by inexperienced and short sighted winemakers and I have seen consistent quality year in and out from one source.
Where is as important as who. here the 'Who' is proven, but $175 per? Would it matter if this was Eisele? Sure it would. I did not go to the website so I may be misinformed.