Since so many people confuse license with rating, and he went straight into emphasising his hours it seems that he's talking about his SEP rating.
I've never been charged, although I hear there are certain persons down south who want cash in their back pocket for the privilege of signing a form.
Providing you've got your hours in, the instructional flight can consist of anything at all. Any skills test you may have taken for another rating is satisfactory for this purpose.
I don't know where the full skills test as mentioned above comes into it, maybe a requirement in SA, but not in JAAland. If you let your SEP expire then yes, you need to do a skills test, but the SEP skills test is not the same as the PPL skills test.