If you make enough straight passes at the table saw with about a 2 degree pivot between cuts you can cut away most of the circle before starting to spin near the blade.
I suppose I was thinking more about larger blades with the sharpening comment, I haven't had to find a blade for the sawbosses in any of the shops I work at, I imagine in a good sized city it wouldn't be that hard. I know all of the shops we have our stuff sharpened at can get just about any blade we can dream up in a pretty quick time.
The price on the Sawboss is a drawback, but I tend to move 2 or 3 other circular saws out of the way in any shop that has one so that I can get to it and use it. The size and weight are really nice. I suppose my original suggestion may be foolish since I was thinking about the amount of saw somebody would need for hobby use and not the amount of money somebody would want to pay for a hobby use saw. Those things are clearly in opposition when comparing the Sawboss to a more standard circular saw......
I'm still going to get one soon.