any clue on how to price vintage bottles of wine and liquor?

Answer 1

Go to a wine collector and ask him how much it is worth, there are specialty stores that specialize in this...Yellow Pages on yahoo is a good place to start looking for these types of establishments in your area.

Cool!

Answer 2

For vintage wines, use sites like winecommune.com or winebid.com to see if it is for sale.

You can also subscribe to the valuation service on cellartracker.com. The main site is free and the valuation service is modestly priced.

For spirits, they don't really age in the bottle. You can assume the value is the same as the current retail value regardless of how old a particular bottle is.