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Dynamic pricing could be coming to your local supermarket
(www.abc.net.au)
This is a most excellent place for technology news and articles.
I actually saw Tim Tams on the shelf at a Morrison's in Northern Scotland, and it was cheaper than Coles in Australia. It's absurdly priced here.
I found an industrial sized box of them, and snapped them up. I've been doling them out to some poor ozzies stuck in my neck of the woods for months now. I think the end price was about two dollars a box.