Around the World Travel

I got a question from someone who had the great fortune to take a year off and travel around the world for a year. I have never had the pleasure to do this but I'll try to offer some guidance on the matter. The main question was how much it would cost, which is very vague and I wish I could put an exact price on it. In a few books I’ve read about people selling all their belongings and traveling for a year, they claim they spend less traveling than they would at home with rent, utilities, insurance, car payments, etc. Krystin and I lived in Lincoln, England for a year to get our masters degrees and came back about even with our jobs we had gotten working 20 hours each week and making minimum wage. We also did some traveling and had fun money.