Ether

Ether is an alternative type of propcoin, which is more usefull than the propcoins.
Ether is the blue coin next to the propcoins. It is currently obtainable only though opening propboxes and getting duplicate items, which gives +35 ether no matter the rarity or the item.
You can do the following with ether:
* Buy more propboxes, 100 ether each.
* Swap a challenge, costing 10 ether.