Watch the shelf prices! Can one rely on Pick 'n Pay?

<p>Once again we noticed that the shelf prices differ from the till prices. Today we purchased PNP CRNCH PEANUT BUTTER which was R18,90 on the shelf and R25,99 at the till! A price increase of 36,5%. And HELLMANNS light MAYO, shelf price R37,90 and R49,99 at the till! A price increase of 31,9%. Not by any imagination is the inflation rate above 30%! This can noways be justified. I must say, Pich 'n Pay refunded us for the difference when we complained. However this was not the first time we experienced this. </p>