While it would be ideal to buy only organic groceries all the time, the reality is that it can be cost prohibitive for most of us. The simple compromise is to focus on the items you consume a lot of and to go with conventionally made products you use sporadically. So, if it takes more than a month to go through a package of butter, it's OK to buy the much less expensive conventional butter than organic. But if your kids eat PBJs morning, noon and night, spend a little more on organic spreads. Prioritizing your eco-friendly grocery list will help you save money and be greener at home.