Walked into Harris Scarfe (West Lakes in SA, at least a dozen still there.) and saw this cookset heavily discounted compared to the rest of the Bluestone stuff there. It's not incredible, and the RRP is definitely a bit silly, but it's decent set at this price (Previous best price I could find was $99). My partner uses this particular one and it has been going strong for a good year now without any visible issues/discolouration.
They had pretty much a 30-50% discount on virtually all kitchen ware there too, so plenty of other choices if you are looking for something else to add to your cooking tool set.