I have one. It was a basket case when I bought it. I gave it some TLC and it's extremely reliable. It is definitely worth that price. It's reliable and productive enough for me to use it in a tree, chunking down big wood. That's one place you need the saw to start first pull.
I bought one new in 2009 shortly after their release. Still have it, use it, its cut a fair amount of wood over the years. For $100 id buy another. 18” bar on mine. With the 18” bar i find readily available chains, 72 DL,..050, .325