Till roll advertising

"Advertising your products on the back of a till roll can prove to be a very cost effective and direct form of getting your message across.With over 230 PostNet stores nationwide amounting to 55 000 people through our doors daily, advertising your company on the back of our till rolls is great exposure, not to mention cost effective:Ad placement op to 1,8 million times at less than 5c per ad."

Is this somthing that will work in SA ?

Is there any advise you could give me in connection with getting companies to advertise on the back of the till slips ?