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The cheapest I've seen these knives.
As of the time I posted it there is 10 available
If you miss out on this deal there is also the same set from Peters of Kensington.
http://www.ebay.com.au/itm/NEW-Global-Ikasu-Knife-Block-Set-…
It goes to $268.60 delivered which still isn't too bad of a price.
Has anyone been able to confirm that you get the $50 voucher in combination with discount code? If not, you should probably mention that it's just speculation at this stage.
Edit: reading the other thread, someone claims that support has confirmed that the $50 will be applicable even if using code. I would probably think of it as a bonus though and not fully count on it since the terms and conditions seems to contradict this.