Buckley is a great guy, and runs the most relaxed class you will take at Columbia. He makes it clear that everything in his class is optional, and that he likes to have the students' opinions shape the course of the class.
As such, he doesn't provide you with a syllabus, you just kind of go with the flow. He will photocopy all of the scripts, so there's no worry about always buying books.
Actually, he only asked that we each pitch in $5 for all the materials, and we never had to buy anything else. As for grading assesment, Buckley left it up to the class how we wanted to be evaluated. Our class decided to write a paper, which ended up being in the 12 pg. vicinity. The topic was completely open, which means that you could write on the play you liked best, the only play you read, or on something we never read at all. For this reason, even the reading is optional in this class. However, it's all short, and usually interesting and fun.
The course is really whatever each class makes of it, but Buckley will add some kind of structure and make sure you end up learning plenty. He really knows his stuff, but he also likes to know what students think, and often the class ends up being an open discussion. If this class if offered again in the future (Buckley was only visiting this semester), I highly recommend it!