Those prices seem very low, compared with what they go for here. My sister in law who is in Johannesburg recently sold her 2004 Jazz 1.4 Auto for R 70000 (about £6000). It was very easy to sell, one advert in Gumtree and about 8 calls the first day. The people who bought it came along with a shopping bag of cash, which is quite common here.
Hondas have a high resale value in SA, similar to Mercedes Benz and VW. At the other end of the scale are most American cars, Nissan and Range Rover.