I understand your point of view but, i need for a little time to try with the offline payment, is importan to know the sucess (or not) and the posibility to put a real online payment because the commerce is a Gym, isn´t a common the online payment in a Gym. In my country Uruguay we dont have a "normal" TPV Service, for example: if you wanna process a Visa Card do you need to go to Visa Uruguay and apply for online payment. If you need process a Mastercard you need to go to Mastercard and apply for online payment, is a disaster and very expensive. Only Visa cost at year is 350 USD, more Master, more some local credit cards... then the process is very expensive. Is for that reason the importance to try first with the offline payment..