I am considering purchasing his training set, but I was wondering how much of it does consist of collar work. At this time I don't want to train with a collar now but I might consider it if I decide to compete with my dog in upper level tests. $140 bucks is a lot to spend for me if most of it consists of cc, and training with the e-collar. Is there enough training done w/o the collar that it would be worth it for me to get it??