So I was wondering where does the money go when we portal? Why does it cost coin to activate a portal? Why are meteors made from portal blocks?
Then I realized… where do we get the coin in the first place? Is it energy generated from Oortians (footfall)? Are we just trading energy? We get coin when we accomplish feats.
So I came to the conclusion the elder in the sanctum is the one receiving all the coin from our warps and then is the one that send us the coin when we get feats.