If the current BTC and ETH rates entice you to exit, you can buy osmium within seconds and pay with your BTC and ETH.
You will not incur any exchange fees. However, there is one thing you should know about osmium:
With bars and discs, you don't have a cut premium for the commodity of crystalline osmium; instead, the published prices on the financial sites apply. However, if you buy Osmium Diamonds, Shapes or Split Bars, then you will have processing costs to pay, which occur when they are cut.
Therefore, when exchanging BTC and ETH, you should buy bars or discs if possible. Follow this link if you want to visit the international shop www.buy-osmium.com. The shop is run by the Osmium Institutes themselves, and therefore offers the highest possible security when buying Osmium. All other shops in the world are spin-offs of this service.
Kemmelallee 6, 82418 Murnau am Staffelsee
Germany