Please support your local CSAs. I don't have one available, but I sure miss the two I used to have.
My first experience was great. I grew avocados, tomatoes, onions, and peppers for the CSA, so I got everything else for free and that included fresh free range eggs and raw milk. My second experience was also great. I was just a paying customer. Pick ups were every Thursday between 12-5; or you could catch them the next morning at a farmer's market between 7-9. There's generally a few price options available. Pay for the season up front, get a big discount. Pay monthly or weekly installments. Pay for a full share or a half share. Some have dairy added pricing, so don't have the option. Some even raise and lower pricing by income levels of the customers. If you're fortunate enough to live in an area with a more than one, shop them and get the one that grows more of what you use. My biggest issue even on a prepaid half share was not being able to eat it all.