There's a general rule in Vegas: if it takes you away from gambling, you'll pay for it. Food can be not cheap in Vegas, notably in a casino. The 75 cent hot dog cart (near the sports book, open 11 am to 5 pm) is great. Unlike Ikea hot dogs (50 cents in the USA, 75 cents in Canada), The South Point hot dog cart also provides onions. The only thing that slows down the line is the person manning the cart also puts on the condiments. Then again, nothing worse than getting behind a person at Ikea who acts like it's the first time they've ever tried to put condiments on anything.