i'd buy dairy and eggs organic because alot of the crap is fat soluble, and in our house, we eat the fat and enjoy it. we have raw milk usually, but lately haven't ordered any and so are buying organic pasturised. have you searched your state for a source of raw milk? usually the farmers that sell raw milk are very passionate about thier farms and animals and treat them well, healthwise and emotionally.
strawberries are next on my list. you can't really wash them properly without bruising them to death. plus conventional strawberries won't have many nutrients or taste in them anyway which defeats the purpose of eating them. same with grapes. what i would do though is use less expensive organic fruits such as apple and orange to make a fruit salad and sprinkle a few peices of grape (or sliced strawberry) on top. you could stretch how long the grapes last in your house. i know if i put a bowl of grapes on the table, they would dissapear within 10 minutes. and at $7 a kilo, i just can't afford to use it that way.
as for pasta, try making your own! and bread n cookies, too.
same with cheese! mozzarella cheese is fairly easy to make. yoghurt too, if you eat it. and the benefit is that you control what goes in like vegetable rennet instead of calf rennet.
sadly, if your on a tight budget and want organic, your going to have to make alot of the things yourself, or go conventional. i don't know what your day is like, so please feel free to tell me to shut up if your too busy to make the above.
as for crackers, i wouldn't bother with organic. like a PP said - not much nutritional value so not really worth it to pay double the price.