The Sun-Star W Knock mechanical pencil caught my eye at first with its nice barrel design and cool barrel colors. It was only after I decided that I liked how the pencil looked that I saw the price: $1.80. Really? Is that a typo? It doesn't appear so, but but never having heard of or used the Sun-Star line, I figured this was a $3-4 pencil on looks alone. Maybe that is just what I am used to these days. :)
So, now that the price is clear, the immediate question that comes to mind next is "Is this a cheap pencil?" I can safely say it is not. It isn't perfect by any stretch, but it is a good value. The key design feature of this pencil is that the tip fully retracts back into the barrel. This protects the lead sleeve from damage, and also protects you from poking yourself in the chest or leg when you put the pencil in your pocket.
When fully extended for writing, the pencil tip does not quite flush up against the barrel opening. This causes a little wiggle to happen when writing, but I didn't even notice it at first, so it isn't too extreme. What is extreme is the eraser wiggle. It is all over the place when I try to erase, so I would definitely recommend a stand alone eraser when using this pencil. Then again, I recommend a stand alone eraser for all mechanical pencils.
So, despite some minor issues, this is a nice overall package for the price. At just $1.80 each, you could buy different barrel colors and match them up with colored leads pretty easily. They certainly make for a nice student pencil or back to school pencil.