We'll then just have to agree too disagree. Until you can show me some good and extensive research to demonstrate otherwise, I'll go with the extensive soft data there is out there to support the consensual position.
This study is worth a skim: http://www.wine-economics.org/aawe/wp-content/uploads/2012/1...
Correct! Price correlates with rarity and place of origin and all sorts of other neat stuff, but as far as 'will I like this wine?', ain't no there there.
That said, individual people should buy based on their tastes - but a $20 bottle of Burgundy wine has even odds to be better than a $40 bottle of Burgundy. The only way is to try it!