Sasol fuel very expensive

I went to fill up diesel at Sasol Zebetiela South on the 5/12/2019 at 05:59 only to realised that their 50ppm diesel per litre is R16.66 compared to R16.17 around the area (Mokopane and Mookgopong). I took liberty of calling and talk to the Manager and he confirmed that it their price they are charging (R16.66 per litre). I urge consumers to use other service station to save money as it is very expensive and you can fill somewhere else cheaper.