This article is from the Computer Security Evaluation FAQ, by Trusted Product Evaluation Program TPEP@dockmaster.ncsc.mil.
The Trusted Product Evaluation Program (TPEP) does not charge
for evaluations. It may be a significant expense for a product
developer to prepare for and support evaluation. There are
often travel expenses for staff, training costs for the
evaluation team, and the cost of having development personnel
take time to respond to the evaluation team's questions. In
addition, if the product did not previously meet the
requirements for a given class, the cost of improving the
product (i.e., doing the testing, analysis and documentation)
can be high. Ultimately, this should result in an improved
product that will be recognized as superior to competitors.