i'd drive 4 hours each way if it was a decent price and I knew the seller wouldn't sell it while I was on my way. hard to find these big old Wiltons in good shape.
one thing also I forgot to mention. check the bottom of the swivel because a lot of these broke and were welded back together or replaced. my guess yours is ok since I don't see any damage on the front or back of your vise and it might be sitting on a pretty heavy stand.
check the bottom of the swivel by taking it off the stand, but try to get the stand too if you can carry it to your car. you can always modify if you don't like it 100% or sell it to someone that needs one if you have a big heavy bench to mount this vise to.