Which runes do people buy the most

im guessing mostly people buy the 4 basic elemental runes which is air,fire,earth, and body, but high lvl players tend to buy more of the diffrent kinds of runes like the other which are chaos, nature, and law. sorry if i forgot any. For members (p2p) there are more complex types of runes such as astral or blood runes. they use them for special attack spells, and i think they also use it for alchemy.