Cost awareness

Bayer or manufacturers. Are you aware, that it it is far more cost effective to buy single dosage (2 tabs) from a garage forecourt, than it is to buy a pack from a chemist or similar? Crazy.. With packaging policies. Please have a re think perhaps. 2 x Tabs-R4. 00 at Caltex. 18 Tabs, therefore 9 x 2. At the best cost outlet.. R39. 99. I know it's only 4.00 difference, but the packaging must be so much more costly.