quote what you want, the reality is it's drive on the left, give way to the left. Hence how no one drives in what most people would call lane one on a multi lane road. To avoid people pulling out of side roads with no regard. An expansion of people arriving at a crossroad at the same time, and they give way to the left. Hence the confusion with roundabouts and the add signs, give way to the traffic on the roundabout
฿5000 for an intensive course resulting in a licence. However don't expect them to be able to actually drive... I put my partner through one and after she had the driving licence asked her to move the car to a new spot in the huge empty car park. 2 hours later, we were still starting and stopping in a straight line and learning to turn...
they are talking Thai ฿. This is Thailand not the USA, hence prices are given in the local currency and ฿50k is realistic for a year language course here