It's expensive, but I know someone who bought the set and she loves them.
I DVR'd a couple of episodes, but the hubby erased them
I would say the "style" of dance on the show is more old-style Am Cab, with a few modern leanings. The producers are Canadian, but the vocabulary used reminds me of Veda Sereem's instruction (or Delilah's vocabulary). Kind of reminds me of Maria Morca's instruction, and it's entirely possible that one of their instructors was a student of Maria's. ??
If that's the style you like, and you don't mind a shorter session (the dance part of the show is closer to 20 minutes long) I think these are a fun addition. I don't own them, but I've seen the whole first season. Like I said, the costuming and scenery/set design are FABulous.