I have absolutely no idea how much ads are on TV (try google) because several factors have to be taken into consideration such as how many weeks to promote product, frequency of the advert, peak time, i.e it will cost more between a popular show, i.e Coronation Street.
(PS I have moved this thread from the ntl sections of the forum as its not related) I have also removed your e-mail address if you have allowed people to e-mail you via your account options, they can e-mail you via clicking an option on your profile or by selecting the option by clicking on your name in your post and a drop down menu appears.