[cityhall]

Did you try the underpriced ones, and were they good? A particular wine can be complex but have some specific quality that makes it unappealing. I'd be surprised if complexity is the main variable between different vintages of the same wine that have very different prices.

[sin7]

I didn't try any. I drink very little wine. I did show the list around and no one was surprised. It wasn't Kendall-Jackson that was under priced. It was smaller wineries that had been getting solid reviews. There must have been some surprises, but I knew very little of wine back then. I also knew very little about machine learning, R or anything else. I knew enough to use Random Forests, R for graphing and the opinion of others to judge the results.

I tried finding the file with the list of all the wines and the predicted prices. I didn't even know enough to name the file correctly.

I think the large companies are very consistent with their product. They have many sources for their juice and because of that their product will be more average. The small companies can have years where they do everything right and create a great product, but it's not like they can just change their price to reflect the better quality.