Sara,
I was just there 2 days ago picking up another one for a forum member, with tax it cost $8.50. I think it is super cheap for a nice decorative piece even if it is a reproduction. I was able to locate a bottle in it's original box and a vintage trading card with the same picture, both on ebay.
It's a street vendor who is only open on weekends, so you won't be able to find them on the internet. They don't even have a store front - it is actually a covered space between 2 old buildings and these signs are hanging on the walls of the buildings.
I go back to Fredericksburg this weekend and pick one up for you.
Anyone else want one, while I am there?