Truly the easiest way is just to put yer head down and grind.
I know it sucks but if you don't buy from merchants and instead buy from players selling their handmedowns you can find good or better deals. Just scan the merchants be aware of the prices and then look for ones you can afford.
This works for the lux shop as well, getting a bronze or lower quality ammy or offhand is huge for your character but if you buy them from players you can then grind easier and lvl faster,
There is NO easy way to gain money, but you can find the best deals, and maximize what gold you have to make your character better and make it faster to then make more gold. But you need to actively work, check market prices and work at it on a will and intellectual level
Best of luck,
Teaweasel 121 Druid
(Morrigan, Clan: Avalon, On Hiatus
)Teaweasel 133 Druid
Best Build is a 30/30 in Thinking for yerself