Most supermarkets have pre-cooked whole chickens for half that price. That's two breasts, two thighs, two drumsticks, two wings. That's easily 2-3 meals, more if you make a soup with the carcass afterwards. It won't be organic, but organic foods are a luxury, certainly not mandatory.
Whole eggs are obviously a great idea, but you can probably find other meats if you shop around a little. 80/20 ground beef, organ meats, large (66oz) cans of tuna. If there's a Costco or Sam's Club or some other kind of bulk warehouse-type shop, look into getting a day pass or trial membership to do your shopping there. Some Wal-marts and Targets also have decent prices in their "supermarket area" too. Check papers or online for coupons.
Also do a search on the forum here for threads like "eating in college." Those are usually based on a tight budget.
I'd say 6 months is a relatively-long time when we're talking about eating the same one or two foods.