Try signing up for winesearcher pro.http://www.vickersliquors.com
Macallan 1946 Scotch (RI) Scot $14,999.95 http://www.marketplacewines.com/items/3 ... -selection
has a 1974 for $469 which seems like a good buy
Note some states do not ship but you have to get creative to buy. I have had them shipped to friends or travel for good bottles.
Also in the USA states like OR have stores with inventory and pricing. They will hold for pickuphttp://www.oregonliquorsearch.com/
enter your fake birthdate proving you are over 21 then in. Also they have no state tax!