Great deal here on the Anolon 3 stage wet stone sharpener with bonus Anolon 20cm chefs knife.
The chefs knife is listed at $55 on sale so you effectively get the sharpener for free or vice-versa. http://www.kitchenwaredirect.com.au/Current-Specials/Knife-S… and the sharpener on its own is listed at $43 http://www.kitchenwaredirect.com.au/Current-Specials/Knife-S… The sharpener usually retails for $80.00.
The Anolon 3 stage sharpener is considered to be one of the best in its price range and is pretty highly regarded as far as semi-manual sharpeners go. The Anolon universal knife sharpener uses three different sets of progressively coarser ceramic wheels inside a water chamber to hone your blade after each use or sharpen an overly dull knife.
https://www.anolon.com.au/anolon//anolon-3-stage-wet-stone-s…
http://www.choice.com.au/reviews-and-tests/household/kitchen…
Progressively coarser? Wrong way!
A $9 Trojan silicon Carbide combination stone from Bunnings and a bit of research and practice is going to actually sharpen your knife and not ruin it like this silly thing.
As for the knife, eh, believe it or not a knife's performance depends largely on how it was sharpened and looked after, so once again, go get a stone and find out what you're doing before handing money over for gadgets.