Do you have to pay for Aura?

Excuse me, could you clarify something for me? I've been reading about this new cryptocurrency called Aura, and I'm a bit confused about the costs involved. Do I have to pay any fees or charges to use Aura? Are there any transaction costs that I should be aware of? I'm just trying to get a better understanding of the financial implications before I decide to invest in or use this cryptocurrency. Thank you for your help.