Not sure if this is Store specific, Tag says 20/08 to 29/08, pic taken on 20/08 at shelves where they put marked down items. Went again today the 30cm frypans were sold out at the specials aisle but there were plenty of stock in the kitchenware section at normal price but scanned at 1/2 price.
I've got one of those Stonehenge frypans. Well worth it for $15.
That stone coating wore off many months ago, it looks like a regular frypan now but the non-stick still works.