Map Completion in PvE: Rewards give you Black Lion Chest Keys, x40 Tier 1-6 Mats, Rares and Exotics ( I made 24g Selling the Exotics I got from Map Completion in the 3 Arah Maps ).
Daily Fractal and Dungeon Runs: Rewards is guaranteed 1-3G, plus Rare Drops and Dungeon Currency which you can Buy the coresponding Dungeon Rares and Exotics to Salavge for Ectos.
PvE Zerg Runs: Rewards can be Rares to God knows what! Jormag Shatter Hydra Queen Fire Element all those guys gave you some Money making stuff!
Stay calm and Gather! Save it up and get stacks it pays in the end trust me.
Some small tips and tricks!