The Unifence by itself is worth about $200. I bought and refurbed a 34-444 saw (a year older version) for my son that had the old Jet Lock Fence on it. The saw itself was in bad condition and with no motor, and I paid $150 for it, found a used motor from a similar model saw for $50 that needed work, and a miter gauge and better condition Jet Lock Fence for $25.
Your saw is all there and in great condition with a more valuable fence. I would have jumped at the opportunity to buy it for $450 or $500 with that fence on it. Many people don't like the Unifence, but when you start asking questions about why, they usually admit that they have never tried it. The Unifence extrusion can be swapped to the other side of the main casting to use on the other side of the blade very easily. It can also be laid down for a "Low Fence", again, on either side of the saw blade. Peachtree Woodworking sells square Unifence extrusions with T slots to make it easier to attach accessories top and side. There is an HDPE wear strip along the rub point of this fence extrusion to make wood slide along the fence easier, and both the original and this fence extrusion can be slid back and forward and locked in any position when a short fence or just a longer "starting fence is desired for ripping long stock. I bought the Uni-T-Fence from Peachtree, but also kept the original fence extrusion, and I found that both have advantages for certain work. Exchanging one for the other is very easy too. At one time, Peachtree also offered a 16" long piece of their Uni-T-Feence as well. This made a great short fence ending just past the teeth of the saw blade, much like the European fences. Using it when a short fence was desired eliminated the problem of using the longer Uni-T-Fence as a short fence because it's length in the pulled back position tends to get in the saw operator's way, especially in a small shop like mine.
The motor on that saw is a special motor. It is dual voltage. On 120 volt power it will run from a 15 amp circuit and produce 1 1/2 hp. When set up to run on 240 volt power it produces 2 full hp.. These were designed this way so a contractor could use it on a job site with only 120 volt power, but could change the connections for 240 volt power and get 2 full hp when the saw was back in his shop. It is not a standard design motor.
What I'm saying is "Sell the saw and fence for what they are worth. Don't give them away. The saw that I rebuilt and set up for my son is every bit as accurate as my Unisaw. It's main draw back is that it has no provision to contain the saw dust. Otherwise, it is a far better saw than the Contractors saws available today.
Charley