Overview Fixed Price Time & Material Offshore Development Centre Time and Material or Effort Based Pricing Model Time and Material Model is an appropriate option, when scope and specifications of a project are difficult to lock down. This model is particularly useful in contexts where projects are quite complex and are prone to specification and design changes midstream. This model gives customers greater flexibility in terms of developing project specification on an ongoing basis and modifying the specifications based on the changing market needs. Under this model, customers pay a fixed hourly rate.