Hunters don't particularly benefit from most gear upgrades you can get while leveling, so you can save a lot of money on that. I think the single most expensive item I bought was a Heartseeking Crossbow for 10g at level 51. Other than that, just pure grinding with a bit of luck. I did 38-45 in the badlands getting 20-30g/hour just from the elemental earth, and the grey drops add up pretty quickly. Once you're past level 20 or so there's always a good money spot to grind in, and it's often the best xp spot as well.

For whatever reason, while I hate farming, I enjoy grinding. Sense of progression?