You would think Vegas has the most expensive food yet. You can't judge the city by it's lights!
Here's Coronado Cafe in South Point Casino that we discovered has the ultimate late night hangover food for as low as $3.95! Served with however you'd like your steak and eggs. They also have hash browns and your choice of white or wheat bread on the side. Don't forget the A1 sauce or you could ask for the 57 sauce. There are also other special orders lower than $3.95. It's not the greatest food, but it will sure fill your stomach after a good one. I would say make it less greasy, but that's where I went wrong. You could let them know how you like everything.
My cousins and I went around 3AM and you'll still find people lining up just for the special till 5AM. They do have a separate menu of orders over $5, but their late night specials are what's great about this place.