1. How do you prove intent? If the act wanted to limit S. 30 to "intentional mistakes" it would have. It doesn't, probably to avoid forming a ****ing huge loophole which would render the whole section moot. So, simple at that, the section applies to all adverts.
2. Huh?
3.
Ja, I don't think your suggestion is going to cut it. Best case, they'll have to put up a prominent notice on their website (like half the front page) and take out prominent ads in local papers informing the public of the error, and if they want the error corrected before the weekend, those ads will have to be in the big daily papers. The wording is "inform consumers to whom the erroneous price may have been displayed", not "inform consumers who arrive to take advantage of the offer". In any case, Massmart regularly marks down goods by 50% or more, which makes anything less than 50% markdown NOT obvious, so SS. 9 can't apply.