I agree with hula-hoop - keep it simple, and go for rustic-style dishes.
You can't go wrong with meat/fish and veggies fried in butter or coconut oil.
Also, the big ass salad and everything omelette are sufficiently flexible to be easily affordable and easy to source for ingredients. You'll need to have some confidence in putting the right flavour combinations together and not following a recipe to the letter. This really depends on your culinary background.
I'd focus on perfecting the techniques for making these, including finding nice dressing recipes for the salad that work well with particular ingredients. Then you will gain the ability to cook flexibly with a basic range of standard ingredients plus whatever is available. That's the key to affordable, nutritionally balanced, stress-free cooking.
F 5 ft 3. HW: 196 lbs. Primal SW (May 2011): 182 lbs (42% BF)... W June '12: 160 lbs (29% BF) (UK size 12, US size 8). GW: ~24% BF - have ditched the scales til I fit into a pair of UK size 10 bootcut jeans. Currently aligning towards 'The Perfect Health Diet' having swapped some fat for potatoes.