Don, Georgia has another layer in its distribution system. In most states an importer can also be a distributor, not so in Georgia. So in the Peach State, all wines domestic or imported are first sold to an importer, who then sells them to a wholesaler aka distributor. When I was in the biz, wholesale prices for my wines were at least 5% higher in Georgia. Here's a link to our FAQ on the subject:
http://www.virtual-ink.com.au/afw-faq/faq010.htm
Also as a practical matter, competition is more intense in NY, DC, Boston etc than it is in Hotlanta; so you pay more.
For example retail stores operate on a lower profit margin than does those in Baltimore for the same item.