In store there was signage showing 30% off, but when I made my purchase it was 40% off in total. VERY CHEAP.
This may be a pricing error, so grab it if and while you can.
edit:
Confirming this was a store error. Today iTunes cards were 30% off from the same store.
Hopefully there are other stores in SA offering 30% off too.
Yeah, the vodafone discount is the error I think…I doubt this would work in other stores…Looks like a clerk error.