What kind of meats are good for quick or cook ahead preparation, and are reasonably priced? This year I plan to eat more meat, and fatty meat preferred. I'd like to know the general level of price per unit weight so I can judge if it's "worth it", compared to how much I like eating it. If it makes a difference, I probably will be eating the meat all by itself (just adding some leaf veggies on the side, and that will be my meal).  You will probably ascertain that I'm not experienced in culinary ways at all, but simply would like to get data in this area of food availability/suitability.

For instance, I believe that beef rib eye is great to eat, can be prepared very quickly, has a nice amount of fat, but is pretty expensive.  Pork back ribs take a long time to cook tenderly, can be cooked ahead and be tasty and fatty.  But because of the bones, I don't know where that falls (more expensive/less expensive) with respect to rib eye.  There's also fatty fish, like salmon to compare.  All the way to canned or those little bags of tuna.

Optimally, I'd like to find a list of meats (cuts of meat) that included a price range (per edible weight vs with bones), the range of fat typically found in the meat.  The list would include the whole range of source animals (not just beef, or not just fish, etc, but all available in the US).
Pork shoulder/butt is very fatty. You can get a small one, since there's only one of you, and make different things.
For example, you cook it once, and you can have pulled pork to add to salads, sandwiches, omelets, refried beans.

Roasts are pretty cheap, I'm thinking Chuck roast, Sirloin tip oven roast, boneless Center cut pork roast. 
One small roast gives me 3-4 meals. So you can cook 3 roasts at once in the oven and you'll have meat for about 9 meals. 

Chuck steak/beef stew meat, is very cheap, and you can make delicious stews to keep in the fridge or freezer in individual serving containers.

Bacon is expensive, but if you ask for bacon "ends and pieces", it's very, very cheap (and it's also very fatty).

A lot of my suggestions will make way too much meat, if you're the only one eating, but they freeze well in small containers. 

Chicken leg quarters are very cheap and fatty. You can make so many things with them. Shred it for salads, soups, coconut milk curries, or have it whole by roasting in the oven. 

Canned sardines (in water) are cheap, and you can add something spicy to them (e.g. chili paste or paprika) drizzle some olive oil, then broil in the oven. 

If you need help in preparing these foods, leave a comment and I'll try to help.