In response to questions from Gayla below, I thought I'd post about my experience with Be Wise Ranch, picking up a small box of organic produce every other week. I really like that I'm eating locally-grown food, that it's all organic, and that I know I'm eating what's really fresh now. I've been very impressed by the quality of the produce, they clean it up very nicely, and don't cheap out. We've gotten a lot of avocados and oranges this winter, some asparagus, and at least one container of strawberries each box for the last few months. We almost always get a big bag of salad mix. There is always a good mix of stuff, and it's a fun surprise to see what I'll get each week. The Ranch is very flexible about cancelling when you'll be out of town.
Drawbacks: It's not for people who don't cook very much or aren't very adventurous vegetable eaters. Unless you know someone you can hand off your rutabegas and turnips to. You don't get to pick what you get. Some of the produce is not cosmetically perfect. Most of the oranges have blemished skins, and I got a batch of lettuce last time that was really buggy, but that's rare.
Sometimes you have to be inventive, or it takes work to store things you have a lot of. Once last summer I got 20 ears of sweet corn.
There's not a lot of onions or garlic or herbs (usually parsley, and sometimes basil or oregano).
Winter means a lot of kale and chard, and summer means a lot of zucchini. And this being San Diego, there's not a lot of fruit besides the oranges and strawberries (I miss apples).
For me, it works out well, I really enjoy eating this way.