It's all about the Lyrium. If you don't like making potent lyrium potions, then do the lyrium smuggling quest once you have 40 gold on your person and third tier coercion. You'll buy lyrium for 40g, sell it for 65g and a dagger, and get paid 20g for your troubles. So basically you turn 40g into 86g in a trip from Orzamar to Circle Tower and back to Orzamar. Between that and just selling useless items and doing side quests that pay you (blackstone, chantry, mages) everyone should easily have enough gold to get one item they really want, which I think was the idea. If you really are devoted to trying to make a lot of money, even if you don't make potent lyrium potions, there are enough money making sidequests to finance two or three of those "buy" only items. Which again, I think, was intentional. If you try hard to make a lot of money you can afford the best possible equipment for your PC. Now if you're willing to make and sell potent lyrium pots on top of all that, you can deck a whole squad out in ideal gear. But honestly, by the time you can afford all that, your PC is going to be such a beast that the other characters are mostly there for flash anyway, so I've never seen any point.