I don't know if it's too late, but I've heard that it isn't wise to buy BBC directly from the infomercials, etc- you get locked into fees, etc.
I bought mine thru Amazon and had none of those troubles.
I just started the workouts, and I am sore- in a good way! It's not a long workout, but you sweat!
I do most of the "beginner" or low-impact modifications since my body can't handle some of the stuff yet.
I suggest you watch the videos thru first to see what the exercises are (esp. if you need the modifications- they sometimes don't show that person until you're 15 sec into the 1 min) I popped in the dvd and fast-forwarded thru each exercise after I got the gist of it- really helped when I actually went to do the dvd.