As far as I'm concerned there's three sort of "categories" as far as capes go. Hard ones, medium ones, and not-exactly-as-hard-as-the-rest ones. Hard ones being the ones like Prayer, Slayer, Farming, Agility, etc. that take a long time, and are expensive. Medium ones being ones such as Woodcutting, Fishing, Crafting, etc. which take a long time, but won't necessarily break the bank. And then there are the "easy" ones like Cooking (post Cook x), Fletching, etc. that can just be bought if you have the money and a week or two to set aside.