This is the very old model that Shopsmith no longer supports. The saw does not have the conversion for blade replacement.
The asking price is $50 and if I can get the conversion kit from Shopsmith for around $55, I would have over $100 invested into a very old machine.
I have looked around the internet to see what others have said, and in general it is a good saw, but being old and not supported with parts, it can become just an anchor.
Also on the extreme chance that anyone has the manual for this, can you let me know. I can order it from Shopsmith for about $10, but as others have said it is a poorly reproduced (copy machine) copy.