For a few reasons.

1) It is important to us that we make these tests affordable to everyone, as we realized there is a lack of options for translators who are qualified but perhaps still early on in their careers, without the resources to pay for more expensive certification procedures. While the tests only need to be redesigned on an infrequent basis, evaluations require qualified human labor for each evaluation. Furthermore, some testees may take the test and then decide not to proceed with evaluation because they feel that they didn’t perform as well as they had hoped, and they would rather study some more and take the next version.

2) Finally, whenever we offer sales, discounts, and other promotions, splitting the costs means that we can afford to offer larger discounts on the test, despite the fact that we are less flexible with evaluation costs, since our qualified evaluators deserve to be paid every penny for their diligent and thorough work.

By splitting these costs, we are able to offer the test at the lowest possible price, to make it more affordable for everyone.