> It's like going to Avis to rent a car for a week and them having to quote you the cost for a years rental. The difference is that money is fungible, whereas

> It's like going to Avis to rent a car for a week and them having to quote you the cost for a years rental. The difference is that money is fungible, whereas a car is not. You can return the car and be done with it. In other words, the asset is Wonga can charge you for perpetuity if you don't repay the money within the agreement, and hence making 5000%+ APR applicable.