Yes, they'd have to take care of such bartering in the parish hall after Mass, over coffee and donuts :)
I spent the first 2 years at my San Antonio chapel thinking no one there even had a garden (I was mostly right) and then I discover that one older gentleman there drives 2 1/2+ hours to Mass, and has a lot of land, chickens, an orchard, you name it. AND he knows all about the situation in the world (he'd fit in here)
He's not even computer illiterate. A well balanced, wise old man. He works his land himself. He leads the Rosary before Mass at our chapel, and is one of the men who takes up the collection every Sunday.
It's so refreshing to talk to someone of like mind (in person). Usually I have to either talk to a traditional Catholic, or someone who is trying to be independent from "the system" and who knows about the dangers of mєdια, the banks, etc.
It's not too often I get both in the same person!