Pantene - false savings

Buying shampoo - Pantene had a special at Dischem Victory Park -- Buy 3 get the cheapest free. What a lot of non-sense. Pantene Aqua light shampoo R79.95 per bottle. At another Dischem (Cresta) store the price of the same shampoo is R55.96. Quick maths -- you only save R8 if you buy 3 bottles. I would have thought Dischem is a reputable company.