Thoughts on street vendors

Actually they're more road vendors than street vendors.People selling EVERYTHING while you're sitting on the tro-tro or taxi.They hold their merchandise on their head on in their arms.It's like a supermarket.You can buy everything from food/water to fabric and flags, telephone cards and Bibles.Someone told me some people even sometimes sell puppies.I'm not surprised.I don't know how people make a living out of this.Everybody buys from them but they are so many street vendors that I'm not sure they actually make a lot of money.