I bet you that I could go back several years and not find a single case in which a mom-and-pop grocery has been challenged at the Competition Tribunal over price advertising. That's just my guess. If I'm wrong, you can let me know.
It's already an offence, isn't it? The only question here is the burden, right? Any business that is selling a product right now, if it is promoting a price at a discount when it knows it's actually the ordinary price of the product, is already in violation, isn't it?