I am assuming George wants a small caravan to keep in one place.......maybe his garden? If this is the case he might not be looking for something that is in tip top conditions for towing.
A Greek friend of ours bought one last year George. It was purchased to accommodate extra staff for his olive picking period. We were astonished at how expensive they were.......and also there didn't seem to be many for sale at the time (Probably why they were so expensive!). He found his through an advert on the internet. - Just a thought.