Not too bad a price but not a bargain either. A machine that old is most likely going to need parts and adjustment. The good thing about the old Deltas is you can still get manuals and parts.
The marquetry artists like the old Deltas because the blade runs a straight 90 degrees front to back. They can cut a stack of veneers and have a straight cut and all the pieces will fit perfectly. The newer saws, especially the C-arms, the blade rocks back and forth a small amount. Not a problem unless you are cutting stacks of veneer.
My advise if you are wanting a scroll saw, is to check Craigs list every day. I have seen some RBI Hawks (Company went out of business) for $200 and that saw if I am not mistaken used to sell new for $1200. Otherwise DeWalt makes a nice scroll saw that won't bust the bank. I have had one for years and really like it.
Get a saw with a nice deep throat, if you are making a pierced cut on a square or rectangular piece you need the room to rotate the board without it banging up against the back of the frame of the saw. This will stop you short on your project.