[1/27 Update: Appears to be sold out :/ ] Definitely an odd site to find such highly sought-after beers but Central Coast Gift Baskets has a few Firestone Walker products people may be interested in including Firestone Eleven and Twelve. Hat tip to jkrenner for the find.
Firestone Walker 11 and 12 at Central Coast Gifts Online
by Adam Nason 
My Mom sent me a bottle of the 12 from these guys. Nice Christmas gift! I don’t know what the shipping cost was like, but the cost of the bottle wasn’t inflated.