Advertising products which are not available in a city or town

Most television channels are charging advertisers based on the number of viewers the channel has for the particular time slot. Compared to online advertising where the rates are very low , the rates for television advertising are very high. However though they are charging a very high amount, the advertisers and their advertising agencies have very less control or are not monitoring when the advertisement is shown
For example on Sony which is one of the top television channels , 5 star 3d cadbury ads are being shown repeatedly
However the product is not easily available in panaji, goa which is a very small town.
Similarly the mango drink Bonzo is not available in most stores in Panaji, it is only available near the post office, opposite the casinos and the price charged is abover the MRP