Seems here on the gulf coast we're limited to grape varieties because of a gall inherit to the gulf area. There are only about 8 or 10 vines that are useable. Would love to get some chambercin about now. Oh well I can dream.
In the Fl panhandle there is no concentrate at any of the walmarts . I found 5 of old orchard in target . That was all in my reigon , even looked at a discount food store, nada. I had to use the regular juice to make 10 gl. of grape.
I don't know if there are any vineyards close but, you may ask them if they have any bottles . If they have tastings, I don't think they can reuse them . check the Kentucky Vineyard Society website for a local winery.
my son was workin at the fire house one day when one of the volenteers came in and told them they couldn't find a socket, the 2/4 one was missing. they told him they would order a new one. they never did find the missing 2/4 though.