I have never heard of Shars. Just took a look on their website and they have all kinds of stuff I want. I think I want to get a digital one so I can switch between inches and metric. They have a 12" digital with carbide scribe for around $150.If you go amazon, you might get bit by Chinese scammers.
Go with a reputable retailer with warranty, go dial and not electronic.
Grizzly and Shars will have decent deals.
Watch out for free shipping deals on the stone.