You pay a fixed agreed amount every month over a specified period of time, this cost includes VAT but does not cater for Third Party Costs, which are billed separately.

You are charged per project and each project has its own quotation, and invoice. You are expected to pay a down payment of 50% before the project starts and to give an LPO as security until the project is completed when the final payment is made. This cost usually includes Third Party Costs.