I've done all the searching in Fairfield County too, and have ended up buying online. I get organic black and white quinoa from quinoadirect.com and I've gotten farro through Amazon in bulk 11 pound vacuum sealed packs. They also have 2.2 pound packs. The brand is Trensatette or something like that.
I've also been to the Organic Market in Westport and they do have a large variety of things but their pricing is not good (and I find them to be rather unfriendly if you aren't a regular).