Interesting stuff right here, but I can't help but think about taxes. If Sarf goes global then you will have to figure out all the intricacies of tax systems all around the globe to fine-tune the experience for every country. Maybe I'm overthinking it?
You are really overthinking it because we will offer POS ( a payment machine for merchants ) so it will be calculated in it for the countries that we support and for the countries that the POS is not offered, the merchants have to calculate the taxes like he would do with cash.