I don't know how much experience you have in the ESL field in China. ALL training centers are all about money. Some do a better job of teaching English than others, some care more about teacher quality than others.

My experience with Web Shanghai is limited to a training seminar held at the main center in XuJiaHui. I recently worked at the Web school in Kunshan, near Shanghai. My impression is this: Although they have many problems, Web is better than the other centers I've worked at and seen. They have lessons with clearly defined goals. The senior foreign staff in Shanghai seems to focus on training and teaching. I found the information garnered at the seminar valuable. But, each center is different. The center director can have a profound effect on whether your experience is pleasant or not.

Bottom line is this, training centers exist to make money. They will squeeze everything they can out of you to make a little bit more money. When you burn out, you are easily replaceable. But, Web is one of the better places to work because you are actually TEACHING, unlike most schools where you just make conversation to entertain the students.