A few here have mentioned that their touring costs don't include travel to and from the start, but I do include that in my touring costs ... that's part of it. If you've got a $2000 flight, that's part of the touring cost. You wouldn't be spending that money if you weren't going on the tour.

And mdithey, if you're planning a tour of South America, I think you'd better consider modifying your diet plan. I'm not sure that Clif bars will be readily available, and peanut butter can be quite expensive in some places. When I tour, I eat whatever is available and preferably whatever is available at a reasonable price. You've got to be prepared to go into grocery stores, look around and select whatever you figure you can work with (both in terms of budget and what you like to eat)