Having a cast iron pan literally does nothing for the taste, unless you do some hardcore searing that normal pans can't handle. It's a waste of money for someone who just moved out and could use actually useful kitchen supplies.
>what can you guys recommend that is relatively low cost that tastes good?
Well seasoned potato wedges for carbs, serve with anything cheap that has protein. The wedges really take no effort to make and are relatively healthy since you don't have to pack them full of salt for taste like french fries.
Potatoes go well with soups as well. Add any kind of sausage and the cheapest frozen soup vegetables you can find and you have food for days for next to nothing.
Pasta with chicken is also a classic. Add onions, garlic and any herbs you have on hand. Sour cream too, if you're feeling extra fancy.
For an easy brown sauce, saute an chopped onion and brown ground beef or sausage bits in a pan with a ton of butter, add a couple tablespoons of flour, brown it and then slowly add water while mixing until it's as thick as you want it. Season to taste. Cream sauces are great too, especially with chicken.
If you're feeling incredibly lazy or just can't afford anything good eat macaroni with ground beef and ketchup.
That's basically all the food I regularly make. Add salt and pepper in everything to taste, of course.
>such as?
Salt, pepper, parsley, basil, oregano, thyme, chives, rosemary, smoked paprika, red pepper flakes, onion powder, garlic powder, soy sauce, honey/sugar and vinegar will take you far for seasoning.
Potatoes, onions, carrots, garlic, pasta and rice don't really go old and can be used with anything so you should always have them at hand.
Flour for sauces and for baking, if you're into that kind of thing. Eggs and milk as well.
Of course you need some kind of a cooking oil, preferably something neutral that has a high smoke point like canola oil.