Good guide mate, anyways, the prices are different from each server.. so i'd say to not put the, xD like boog2 40k.. in virgo for example is 25k..
And, Of cource you must have enough atk to kill this mobs buy one hit anyway.. if you are mage its harder.. unless u want to use skill, but it costs Sp food. I have a lv 70 wind with 70 angela, and not able to kill a bear in s.pole from 1hit xD