I asked that specific question from a friend of mine. His answer was: * we charge $20 for a plate that costs is $4 in ingredients because we are lazy to squee

I asked that specific question from a friend of mine. His answer was: * we charge $20 for a plate that costs is $4 in ingredients because we are lazy to squeeze it down to $3.50. * Single sourcing means I don't have to trust ten of my employees with credit cards to run around the city to get stuff. * Single delivery means I can schedule it better.