That's strange. I have seen about a half dozen lectures this year in Houston. Even the ones by dealers at least taught the material they were selling. If you wanted it, you could buy it. If not, you didn't have to.
Why don't you post a list of these "dealer lecturers," so we will know not to hire them. But please leave Daytona Magic and Ickle Pickle off the list. They don't charge for their lectures. They are admitted dealer demos, even though they teach a lot of their material.
Danny Archer also teaches his material as well as selling it.
Bill Palmer, MIMC