I got the 5 DVDs + TPRS in a Year + PQA in a Wink! = US$116/NT$3600
You can get 5 DVDs + TPRS in a Year as a package deal for US$50.
I use it with adults and kids (I teach at two schools). The kids are easier in some ways, and the adults in other ways.
With the adults I do the following:
1. I have set words, like question words they should know etc that I have the English and Chinese posters for.
2. The new vocab in each lesson I do in the beginning by writing them on the board and then I have each student come up and write the Chinese word for one on the board.
3. Then I get on with it and "teach the grammar" by circling etc, using some or all of the vocab in the lesson.
I'm still new at this, but I find I can use the method and get through all the work. When we have section where students must question each other etc etc, I make it a class activity and I ask them, have them answer me and repeat the correct answer back and re-ask (circle etc) the class. I've tried making stories, but either I'm not good enough yet, or the kids are just easier to do that with.
Edit: Oh, when a word or pattern comes up that's new, I write the English and Chinese on the board. If I can't write the Chinese (too long, unfamiliar character or whatever), I ask a "star" student to help me write the Chinese.