Yzerfontein

This blog is to see whether anybody can help advise me on getting a new car (and to demonstrate that I can write about something other than Yzerfontein !). I wrote off my car in a motor vehicle accident weeks ago. I was driving along the N1 (at about 120km/h, I don't speed unless it's an emergency - normally drive at the speed limit), and I went round the corner just after the Panaram turnoff to discover the traffic had come to what was almost a dead halt. I slammed on anchors, brakes locked and I went into a skid as I tried to miss the car in front of me, I lost control of the car, it slammed into the hillside on the left of the N1, and found myself in a ditch.....after much drama and x-rays I found that the extent of my injuries was a sore neck and back....the higher powers were good to me.
Now I have to get a new car. I'm looking for something fuel efficient and safe. The Toyota Yaris Spirit seems to the best fit for what I'm looking for - it uses 6.9 litres per 100km and has a European NCAP rating of 5. But where do I get it cheapest? I'd prefer not to buy it new, are there any demo or used models out yet? What price? Any advice appreciated. I stay in Cape Town but am often in Joburg, so could potentially drive it down from there.