In my country the price of coffee is so cheap that it is impossible to sell coffee using Bitcoin as a means of payment. If it is calculated, the transaction costs will be greater than the price of the coffee sold.
yhup probably that would be the reason why Op still don't have costumer up to now..and i think it will become more reasonable to have bitcoin as a payment if you're selling expensive coffee like" kopi luwak" which the price ranging between $100 to $200 because surely those rich people who loves such expensive coffee in your country will gonna pay bitcoin for it no matter what since they're rich as well. Lol