For anyone interested in the intricacies of fine wine trading I would suggest the documentary "Red Obsession". It interviews a lot of Bordeaux producers and shows how the economic explosion of China led prices to skyrocket.

http://www.imdb.com/title/tt2419284/

BTW, one thing that always troubles me. What if you start collecting wines but you lack the infrastructure for storing them? Can you rent storage at a cellar? If someone could build a subscription service for that I'd certainly pay for it.