Easy way to get money : GW Submissions

Leave from the northwest exit of gates of kryta to get to Scoundrel's Rise. After you leave, head northeast until you get to Griffons mouth. After that you can keep on going in and out of Scoundrel's Rise, and killing the Mergoyle Wavebreakers there. Its easier with an elementalist, but it can still be done with any class. If you should die, there is a revive area right next to Griffons mouth

there are easier ways to get more money, this isn't a very extensive guide.