You obviously cannot go around the world for a 8% markup on the actual Bitcoin price for small amounts. What is the minimum amount that you are willing to accept for cash deals?
It can also not be higher that the allowable capital controls that are in place in many countries, so it will be interesting to know how you deal with that.
Do you have agents in different countries or do you do this on your own? If you do have agents in different countries, please supply us with a list of countries that are covered.