Ethiopia is full of entrepreneurs. From the guys lined up on the streets shining your shoes (they are usually merely kids or young men, often living in groups in shanties and saving money to hopefully open a business some day), to those placing their weigh scales on the street. Unless you are rich, it is not practical to buy a scale for your personal use. That attitude seems sensible enough. We passed 3 or 4 scales in a couple blocks, choosing the one that appeared to have the best combination of actually being calibrated and having a low price. That's the difference between weighing yourself for the equivalent of 1 cent to 2 cents!