That needs a bit of getting used to, but it's an interesting solution to the inflation problem that most similar games run into. I was skeptical about that at first, but I like it over a gold system now. The currency items are all consumables that are in some way used in crafting to improve items, so if there's ever too much of some currency item in the system, they'll all just start getting used up in crafting. I don't do much trading, so I've just been hoarding my orbs.