Clear instructions without being micro managed and good feedback on how to improve. Good quality and plenty of equipment and paint. Started on time.

The presenter was an absolute expert, and very engaging through the lesson. Unfortunately we had limited hands-on time, but it was arguably better, because we could make more things, and able to observe and write notes as we went.
I don't know the cost (mine was a gift), but it was a thoroughly enjoyable afternoon.

(Be prepared to stand for two hours though, something I guess is the norm for bakers) :-)