Too Long; Didn't Read
The most common ways to settle up with software development agencies are: fixed pricing and Time and Material (T&M) pricing models. Fixed price pros: You know how much the development process will cost. Fixed price cons: It is not a flexible option. It is somehow in opposition to agile methods.Fixed price is convenient at the beginning of the cooperation when you want to test the software development company and still are building trust toward a software vendor. It's convenient during the maintenance phase when a software development team is available if something has to be fixed or changed.