Entirely too many ah's, and-da's and umm's in your speech. Very
annoying and distracting.

Get a faster computer or don't work in RAW.

You are way to personal and chatty. Should be a lesson but it appears
you like listening to yourself talk.
(no offense meant on that comment) ;o)

Get to the point quicker, people watch videos rather than read a book
because its faster, don't slow it down. Work from a script will keep you
focused and minimise errors and the decision err..haaas.

Your price seems good but they'll be balancing that against buying a dvd
or cd so you got to show the value and the demo just doesn't do that.

good luck

--
f=Ma well, nearly...

nice site and a frendly presentation, but you do need to practice the
presentation before you record it.