I can exchange FX at 0.5% market rate, and that's through an online stock broker. I can probably do better through a forex broker, e.g. 0.25%. I don't see how B

I can exchange FX at 0.5% market rate, and that's through an online stock broker. I can probably do better through a forex broker, e.g. 0.25%. I don't see how Bitcoin can be more competitive.