A Victor VV-XI, such as the example you linked to, is a great starter machine. It was Victor's biggest seller (800,000 +), so there are lots of them around. As others have suggested, you get what you pay for. Machines you get "in the wild" often need work and if you don't do that work yourself you can have more in one when it is restored than you might have paid for a serviced and ready to go machine from a reputable dealer.
Of course I often do not follow my own advice, as my heart goes out to derelicts I see that need saving and then I foolishly ride to the rescue more often than not.

Clay