Frost dragons average 2m per hour. With overloads/pak yak/max stats you could double this as long as your constantly fighting (but probably not because they're packed as hell nowadays).
Nex is best money maker atm but youll need all cb stats maxed and best gear to get in a team. Corp has horrible drop rates been there 2 weeks and got only one 7m sigil split
first off,it doesn matter if youre max melee,it matters on your herb lvl and prayer level.Please state those.you will not find a good team without turm/ovls