The current "gold"-drop rate by mobs is ok. If it would be at 10S per mob, then it would not change anything for you, because instead of 72G, you would have 720G, but prices would be equally higher, so you could not afford them, too.
Aeria is not selling gold. That is very important, that they dont, because it is well known that this would destroy economy.
But you can buy items from Aeria and trade them for gold to other players.
The other option is farming gold.
You get gold by quests.
You get "gold" by killing mobs.
I have read, that it is possible to get about 10G/h.
I dont know how and where and when, but it is said to be possible.
Players that can afford items for 1k or 2k or more simply played a long time, found items, sell items, and so increased their wealth. Some where lucky, to find a rare item, which could be sold for thousands of gold, others just did that, by selling just alot of found items.
So everything you need is allready there, either farm, or buy AP items and sell them to those with wealth.