If I understood well, PayPal is a bank there. But the bank is in the bank's online or on the internet. Services like Internet banking in our country is to accept deposits and remit money to a bank generally will only have to charge transfer fees, money which is not very expensive. (For business, whether small or large), no interest. But if you compare the benefits to the interest and the interest of the potential in the form of PayPal. To facilitate Care payments between you and your partner, if you are trading goods from ebay, most vendor to identify the buyer pay by PayPal whenever a transaction through PayPal by PayPal. It is a guarantee that the funds are paid through PayPal.