I'd actually say it looks worth viewing. The guy seems fairly honest in his description and there is a full service history by independents apart from the last one. A set of 7's & 8's Fuchs can be had for £5-600 and you'd get something back for the existing wheels.
As for the oil drips there's not many that don't and an inspection would determine whether it's actually a problem, eg snapped studs etc.
All in all we're not looking at a 12K SC, the guy would probably take a bid of half that and if it's as rust-free as he says (in all the important places) it could be a nice buy.
Go see it if it's not a million miles away!