I have had a chance to go through some of the material online from the 80/20 leg surfing set, and it is really good. The material is well organized and well presented, and given in a logical order as he builds the system. He gives very good details, without being overly confusing. I particularly like the progression of "do this, if opponent does x, do A, if he does y, do B"; and that he goes over leg lock defense as well.
I know that the DVDs have sold out already, hit given how quickly that happened I think it is likely that the offer will be repeated soon.
I am very happy with this purchase. I have a lot of drilling to do at open mat.