Inside the busses agents are selling their products like healing ointments against rheumatism and quack remedy against parasites. The strategy is always the same. The agent begins with a gushing greeting and excuses himself for his pertubating. Then the prone guest is confronted with an explanation of the world. The world is bad. Alcoholism, physical discomforts etc. are being issued. Then he introduces his messianic order. He possesses the solution. His product! It is even cheaper than anywhere else in the world.
A piece costs 5, two cost 10, but because it is us, we can get two for 7 bolivianos. And the best thing ever is this: Because we are the best, the first four people who buy two pieces get one for free.
Most of the time this works.