I delayed responding to this topic because I very seriously considered making you an offer myself. Although I could have funded it, it came to two issues: 1. I have a weird affliction which means I can't love Black bikes whatever they are, 2. If I buy a cheaper, lesser bike, there will be $ left in the piggybank for possibly another trip to Italy next year.
Now to the question at hand:
What's a V7sport worth these days?
Over the last 12-18 months there seem to have been 10 or so advertised in Oz, the figure would be at least 30K, less for an ordinary one and certainly more for one as fine and complete as yours.
Chances are you shouldn't need to advertise it, I'm sure you'll find a loving home for it amongst "the Frats" or other owners groups in OZ. Word of mouth is most likely to find a "genuine" new home.
Good luck to you, it's one hell of a Guzzi.