How to buy McDonalds Big Breakfast and save money at a nice tidy discount~
Big Breakfast Meal costs $6.75, Sausage McMuffin Meal costs $4.20.
Order the latter, add on Scrambled Egg for $2, total $6.20, you save $0.55 plus get an extra slice of cheese.
You just bought yourself everything you would get in a Big Breakfast plus an extra piece of cheese at a 55 cents discount! Cool isn't it? :)