It is hard to compare, since the distinct food item does not have a price. You pay the farmer collective a slice of their yearly budget in terms of money or work and get a slice of the yearly production. Furthermore the CSA produces food / varieties that are not even available or comparable in terms of quality in the supermarket. But one member weighted the outcome of one years production and compared it to typical supermarket prices of similar products and found out that the CSA was actually cheaper.

The community is sharing their money or work to keep the agriculture running. They are actively engaged in their food production and therefore prosumers.

https://en.wikipedia.org/wiki/Community-supported_agricultur...

So "prosumer" is a portmanteau of "producer" and "consumer"? Just want to clarify because in most/many contexts, it's "professional" and "consumer".

Sounds like price comparison is an open question, unless there are more definitive/rigorous comparisons out there. At the very least, it sounds like there's a tradeoff between quality and selection (when you walk into a supermarket you can choose to buy whatever you want, whereas a CSA is limited to what's currently being harvested at a particular farm).

I'd certainly be open to making this tradeoff for some of my food, though when I've had CSA deliveries redirected to me by neighbors on vacation, I found that much of the food (even oranges, which I think of as moderately durable) went bad within just a few days.

"whereas a CSA is limited to what's currently being harvested at a particular farm"

That turned out to be an big advantage of the CSA for me. It is very satisfactory to be in natures rhythm, be engaged in the growing of things I eat and therefore in the growing of myself. I learned a lot of new products and recipes I even did not know exists.