That is a lot. We run a 2hr try the track that is only $30 and includes your rental. I doubt we are making money off it though, its really just to get people in the building.
6 sessions (or I guess 7 if the first one is required) is a lot of time to get certified. Ive coached at 3 tracks now and they are all 2 x 2hr classes to go through everything except racing.