as it happens, i just found a good source for Cock & Bull at
Wally's Wine. i ordered the C & B along with some Boylans root beer, the Dry Kumquat, Raspberry Lime Rickey, Journey Vanilla Twisted Bean, and the Reeds Spiced Apple Brew.
in order to make it worthwhile you need to order enough to make the shipping reasonable.
the Reeds Ginger Beer is available out here in many varieties, but i've never seen the Apple Brew so i had to grab it.
never heard of the seasonal Virgil's, i'll have to seek it out too.