We get fish oil supplements from Costco (they sell a couple of different brands), but I don't know if tey are good or not. How do you tell??

As far as organic produce goes, we try to buy locally grown stuff as much as possible (hence the farm shares). And in times when it's abundant, we can/freeze/etc... so we have stuff for later. It's cheaper that way and better than having stuff shipped from south america out of season. It doesn't work for everything though. Have you read "Animal, Vegetable, Miracle." by Barbara Kingsolver? Interesting read about her family spending a year eating almost exclusively local food and growing their own.