The last few years have seen a strange trend I am not sure I like. It's the selling of of an "award winning" act on DVD well before that performer has gotten too old to do it.
Some say it's to show their techniques to put a time stamp on it but they do not "encourage" you to perform their act verbatim. I understand letting it all go after a lifetime of creation and magic. However I think the selling of a magic competition act after only a few years is for one sole purpose... profit.
I guess when there is a buck to be made, there is no point in keeping secrets.