For cars, have a look here
Auto Trader or here
Great Trade Centre.
They will at least give you an idea of prices. The latter is a huge site with "nearly new" cars, ex fleet and rental cars, company vehicles and such like.
If you want something decent then it will cost, but if you don't mind something cheap and cheerful, say a 10/12 year old Peugeot 205 Diesel or similar, the they are almost free. Few hundred quid would buy something. Older cars cost almost nothing these days.
Regarding the bike, I'd have thought about £4000 or so. Have a look here
Bike Trader
BTW I'm heading in the oppsite direction in December. Flying in with my family to Sydney, picking up a camper van, driving down to Melbourne via the scenic route. Spending Christmas with wife's (South African) best mate and her Texan husband. Really looking forward to it. Anyone care to lend me a bike. I'm determined I'm going to ride the Great Ocean road.
