Going from $1.25/person/day to $3/person/day might do nothing for you in Manhattan, but in Nairobi it makes the difference between a shack in a shanty town in the first instance, and indoor plumbing, locked doors, and an electricity supply in the second.

Source: I’ve visited a home in Nairobi whose rent was in the order of $1,000 per year including bills, and housing 4 people.