The Shopsmith scroll saw is a decent saw but there are better to be found at that price.
No matter what, use the best blades you can get. My wife is the scroller here and has tried them all. By far, the best are Flying Dutchman. We get ours from a geninue scrollling master and a real Dutchman to boot, Mike.
Go to http://www.mikesworkshop.com
to see his work, read his story, and see his stock. He's a very nice guy and prices his wares very fairly.