In 2013, I got taste and aroma for around 1100 wines. I used the data to create flavor profiles and predict the price based on the chemical composition. In general, more expensive wines are more complex and the predicted price matches the actual price quite well. This breaks down on the extremes. Boxed wines such as Franzia and Vella are under priced. Not by much, but their juice is closer to 4-5 dollar bottled wines. At the time of the calculation a bottle of Franzia was around 2 dollars. So, it's a pretty good deal. On the other side, most new world wines over 35 dollars are over priced. There's nothing chemically different to the the wines just below 35 dollars. There were a few wines in the middle that were way off. I remember a Clos Du Bois was under priced by 7 dollars, but most of them were in the right range. The biggest offenders were wines that built their reputation in a well known appellation and moved a level higher. It's very common for wines to start in Sonoma Coast or Carneros and end up with a California appellation.