I would not like to discourage you but in my opinion,you may not have kind of business only availing licence for Tcurrency.
1. 85% people are used to Plastic Currency (Credit Cards/Pay Pal... etc.)in Countries Worldwide....
2. Most of them will definately prefer to buy TC directly from Tripleclicks store... rather then buying from and ECA... as they also have to pay less then what they pay to ECA.