Should I charge my members in ($)Dollar or in (£)Pound?

I am based in the UK. And while it is true that I am planning to launch my product in the UK first, I eventually gonna expand this globally. So should I charge my members in dollar or in pound?

Can't you set up prices individually for different countries? I know that's possible with, don't know what payment processor you're using though

Ah that's a good idea. I am using Stripe. Is that possible to configure Stripe to do this? WIill check out the that link