I think the amount of gold you accumulate should be how many experience points you have. And when you reach milestones you're allowed to level up.
But any money you spend keeps you further away from your next level milestone. So you can save your gold to get to your next level or spend portions of it on things like magic weapons that will be useful in combat.
That's how it used to work a long time ago, back in the days of Advanced Dungeons and Dragons. Good times.
Please not.
If we get as much exp as we get money, we could get to lv 10 in the EA.
You can gather tens of thousends gold in the EA, even you you buy all unique items.
It would also make playing more annoying because it encourages you to grab every item in the game just to sell it and the game is full of items.
I say gold and exp must be totally independent things.
Getting gold should not give exp and getting exp should not give you gold. You explore and do quests and as reward you usually get both, where money usually comes as loot that can be sold.
But for example opening a chest with gold should not give exp and killing an enemy who does not have loot should not give you gold. Most non humanoid monsters should not have items or equipment.
Prof. Dr. Dr. Mad S. Tist 
