The major problem with demo class are generally based on several factors. 1st it's a strong change the new potential employer is not in your city. Thus = bus + hotel on a MAYBE. 2nd I have seen potential employers just called in expats to see their smile. I lost a job based on my suntan ! I was told I am too dark - yes I did offer a photo of my arse to show my 'WHITENESS". 3RD and last, the majority of the " people " observing your demo class have poor to pathetic English skills. SO are you being judged on how funny you are, OR being judge on your skills ? I know the answer do you ?