Ever wonder how much that bottle of wine that your friend gave you actually cost?
Dr. Karl Blanks, a graduate of University of Cambridge, found that there is a correlation between the depth of the dimple on the bottom of the bottle (technically, it's called a punt) and the price.
He even worked out a formula:
Price of Bottle = (Dimple Depth in Millimetres + $6.65) / 4.314