Payment system is a mandatory attribute of a mobile application designed for commercial activities. If you sell goods or services over the Internet, your customers need a convenient and secure means to make payments, and a reliable payment system.
The cost of connecting the payment system to the site may be different for different companies-aggregators. It depends on many factors.
The cost of the connection. Today, many aggregators practice free connection based on a long and mutually beneficial cooperation.
The cost of support and maintenance of the system.
Type of integration. Integration without interfering with the site code will be more expensive.
The presence or absence of the security Deposit.
In addition, many payment systems operate under a contract, implying the monthly subscription payment, and the transactions are subject to a Commission, which is from 2 to 5%. The timing may also vary: if some systems are connected for a period of 3 days, others begin to operate only after 2 weeks after the application.